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UM33A
Control Devices

Digital Indicator with Alarms UM33A

The UM33A is a digital indicator with alarms that provides up to 9 alarms outputs and input correction function (PV bias, Polygonal line approximation, polygonal line bias).

A 24 VDC sensor power supply is available as an option.

New! UM33A-S SENCOM HMI Type
The UM33A-S connects to sensors which are connected to a digital SENCOM Smart Adapter, model SA11.

What Are the Benefits of the UM33A?

 

Advanced Function

  • PV bias, polygonal line approximatin, and polygonal line bias
  • 24 VDC sensor power supply available

Simplicity

  • Easy-to-read, 14-segment large color LCD display
  • Scrolling text feature for parameters
  • Navigation guide & navigation keys
  • Programmable funciton keys
  • User settable default values
  • Multiple language support (English, Spanish, French, German)
  • Compact design of 65-mm depth

Networking

  • RS-485 (Modbus/RTU, peer to peer, coordinated,   PC-Link,  CC-Link)
  • RS-485 (Modbus/RTU data monitoring function, Modbus/RTU master function)  →Click Here

Reliability

  • 3 year warranty*1
  • RoHS/WEEE
  • NEMA4*2/IP66 front panel

Application Software

  • LL50A parameters setting software with the ladder program building function (sold seperately)

*1: The 3 year warranty extendes 36 months
*2: Hose-down test only

Details

Specifications

ITEM UM33A
PV input Input type 1 Universal input (TC, RTD, mV, V, mA)
Indication accuracy ± 0.1% of F.S.
Control scan period   50, 100, 200 msec
PV/SP data display   14-segment, 5 digits LCD display
Digital inputs Number 2
Type PV peak and bottom values reset
Digital outputs Number 3 (Std) 9 (Max)
Function PV High, PV Low, Dev High, etc
Retransmission Number 1
Type PV
Loop power supply (LPS) (option) Number 1
Voltage 21.6 to 28.0 VDC
Communication (option) Number 1
Type RS-485, CC-Link
Other specifications Power supply 100 to 240 VAC (+10%, -15%) or 24 VAC/DC (+10%, -15%) (option)
Power consumption Max 15 VA
Mass Max 0.5 kg

Resources

Application Note
Constructing a Monitoring System Using Existing Sensors
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Overview:

Taking advantage of sensors already available in your system, you can simply add VJ series signal conditioners or the UM33A Digital Indicator with Alarms to easily build a monitoring system on a PC.

Industries:
Application Note
Indicating Alarm Meters for Control Rooms in Process Automation (PA) Sites
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Overview:

The UM33A Digital Indicator with Alarms is a digital panel meter with an easy-to-read white LED. Combining the features below, it can be used as a digital indicating controller for control rooms, and instrumentation panels in process automation sites.
Application Note
Monitor freezing and cooling temperature and humidity
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Overview:

Check site conditions while monitoring temperature and humidity of the production line and storehouse.
Application Note
Compressor Anti-surge Control
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Overview:
  • Effeciently controls the inlet valve and blow-off valve when the compressor starts and stops.
  • During steady operation, controls the inlet valve so that the amount of discharged compressed air becomes constant (flow control)
  • Surging: Load decreases, the amount of discharge flow and pressure drop, and a limit is exceeded, possibly destroying the compressor.
Industries:
How can I display UM33A alarm setting values in the operation screen?
(ns-faq-ut-2075-setting)
Use the Select Screen function. Up to 5 select screens can be configured. Assign parameters CS1–CS5 to Alarm1:2351 through Alarm8:2358.
Can I write the PV value with the UM33A via CC-Link communication?
(ns-faq-ut-2150-spec)
Yes. Set the input range to 0-10 V. Short the input terminal (terminal no. 202-203). If you write the value to the parameter's bias (BS) item, it is reflected to the PV value. Note, the profile is overwritten so you need the LL50A.
I'm measuring a tank level on the UM33A. I don't want the minus to display.
(ns-faq-ut-2170-spec)
Try the 10-segment linearizer approximation function.
How do you set the PEAK and BOTM parameters on the UM33A?
(ns-faq-ut-2229-setting)
PEAK and BOTM are not setting parameters. They are the maximum and minimum values of the measurement input (PV), respectively.
Can I use a low cut on the PV (measured value input)?
(ns-faq-ut-2186-spec)
This is supported on the UT75A, UT55A, UT52A, UP55A, and UM33A by using the 10-segment linearizer function.
I want to display he volume of a spherical tank, but is there a function that can do that?
(ns-faq-ut-2192-spec)
Try the broken line function. That function comes with the UT52A, UT55A, UT75A, UP55A, and UM33A.
Is there an easy way to change the settings for alarms 1 and 2?
(ns-faq-ut-2062-spec)
If you register the A1 and A2 parameters (for setting alarms 1 and 2) to the select screen, you can display the alarm 1 and 2 settings simply by pressing the DISPLAY key repeatedly. Set the CS1 and CS2 select screen parameters to "2504" and...
Do you have a 48 x 96 sized controller that supports CC-Link?
(ns-faq-ut-2091-select)
We have the UT52A/UT32A/UP32A in the UTAdvanced series. For an indicator with alarms, we have the 96 x 48 sized UM33A.
I just purchased the UT and UM and the EV lamp turned ON. What does that mean?
(ns-faq-ut-2157-setting)
Per factory parameter settings, the EV lamp on the UT and UM is assigned to alarms, and may light depending on the measured input (PV) and setting values. Configure your EV lamp and alarm type settings to match your operating conditions.
I want to wire a 2-wire transmitter and a 24 VDC sensor power supply.
(ns-faq-ut-2119-connect)
You can use this with suffix codes /LP, /L1, /LCH, /L4, and /LC4. For wiring to a 2-wire transmitter, the controller is equipped with an insulated sensor power supply (21.6 to 28.0 VDC). ...
After changing the UT's SP values from the MELSEC via CC-Link, when I change the SP value on the UT main unit, I can't change to the same value as before from the MELSEC.
(ns-faq-ut-2026-connect)
As for individually writing parameters via CC-Link, changing OUT area values constitutes a write request. In your case, since the OUT area value hasn't changed from the previous value, the SP value is notoverwritten. As a fix, periodically copy t...
With CC-Link, I write 1 to RY48 and change to MAN, and then change to AUTO using the main unit A/M key. Can you tell me how to change back to MAN again via CC-Link?
(ns-faq-ut-2027-connect)
Yes. Return RY48 to 0, and then write 1 again.
What profile number is used when using CC-Link on only 1 unit?
(ns-faq-ut-2028-connect)
Use profile number 0. You can also use CCLink even if you delete the parameter assignments of Modbus slave 2 from the user profile.
Can I switch between RUN and STOP via CC-Link?
(ns-faq-ut-2029-connect)
RUN/STOP is set to contact input DI2 by default, and takes precedence over communication. Set S/R to OFF with DI.SL.
Can I output an alarm (close the alarm terminal) on a power failure?
(ns-faq-ut-2056-setting)
If not using relay contact output for control, you can use it as a 4th alarm. This alarm would be the C contact type, therefore by connecting it to the N.C. (normal close) side you can use it as an alarm terminal. Note that when changing the basic sp...
Can I change the temperature controller profile information for CC-Link communication?
(ns-faq-ut-2068-spec)
You can change it if it is in a user profile (profile no. 0).To create a user profile, use the LL50A network profile tool.
What is the Modbus master function that is added when CC-Link communication is installed?
(ns-faq-ut-2069-spec)
It allows communication with RS-485 compatible UTAdvanced series instruments via CC-Link. It allows acquiring data from downstream controllers that do not have CC-Link communication, and writing parameters.
What happens to transmission output when an input OVER occurs at 4–20 mA input (PV: 4–20 mA)?
(ns-faq-ut-2081-setting)
The output is restricted to a lower limit of 3.2 mA (-5%) and an upper limit of 20.8 mA (105%), but only when the transmission output scale RTH and RTL settings are the same as the PV input range.
I connect multiple UTs as CC-Link slaves. How should I assign PLC CPU registers?
(ns-faq-ut-2092-connect)
Open registers for the number of proprietary stations per unit. For example, if there are 3 CC-Link Ver. 1 stations are occupied, the bit area occupies 96 bits per station and a word area of 12 words per station. If the refresh device of the word are...
Can you describe the register symbols in the profiles for open network communication?
(ns-faq-ut-2115-term)
See the UTAdvanced Series Communication Interface (RS-485, Ethernet) User's Manual.
Can a UT100 series instrument be connected downstream of a UTAdvanced series with CC-Link communications?
(ns-faq-ut-2125-spec)
No, a UT100 series instrument cannot connect. Only other UTAdvanced series instruments can connect.
Can I connect transmission output (current output) to a voltage input meter?
(ns-faq-ut-2135-setting)
If you connect a shunt resistance to the input terminal of the receiving side meter, you can input it as voltage. For example, if you connect a 250 Ω shunt resistance to 4–20 mA output, it's 1–5 V. Make the resistor, including t...
I'm writing PID settings via CC-Link communication, but when I send 100 to proportional band P, 10.0 appears on the main unit.
(ns-faq-ut-2138-setting)
Proportional band P has data of up to 1 decimal point. By contrast, communication data has no decimal point. If you want to write 100.0% to P, send 1000. For differential and integral time, the data has no decimal point.
b.out was displayed on the controller's PV display. What does that mean?
(ns-faq-ut-2148-spec)
b.out indicates a burnout on the measurement input. It appears when measurement input wiring is disconnected. Check the sensor and wiring.
Which station type should I select for the UTAdvanced series for CC-Link communication: Remote I/O, Remote Device, or Intelligent Device?
(ns-faq-ut-2164-setting)
The UTAdvanced series is a “Remote Device station.”
I purchased a unit with CC-Link communication. I'm setting up the parameters for CC-Link, and there are 2 communication speed settings, BR and BPS. Which setting should I use?
(ns-faq-ut-2166-setting)
BR is the communication speed for CC-Link. BPS is the communication speed for the Modbus master function (RS485).
Sometimes data can't be written to the "1.SP" register via CC-Link communication. What causes this?
(ns-faq-ut-2178-spec)
When writing individual parameters via CC-Link communication, if the data values to write are not different from the existing ones, overwriting of the values does not occur. If you write all parameters by individual communication address and the valu...
Sometimes with CC-Link communication it stops writing data. What should I do?
(ns-faq-ut-2180-spec)
When the writing flag (RX1) is ON, the next write process can't proceed. Make sure the writing flag (RX1) is OFF before performing a write process.
What happens if I write data outside the specified range via CC-Link communication?
(ns-faq-ut-2181-spec)
If outside of the parameter setting range, data is not written.
Is there support for the "CC-Link IE" standard?
(ns-faq-ut-2182-spec)
No. Only the conventional CC-Link Ver. 1.1 or 2.0 standards are supported.
I want to perform autotuning via communication on a UT with CC-Link communication. Should I turn AT_L1 which is assigned to the OUT area in the profile to ON (=write 1)?
(ns-faq-ut-2175-program)
Autotuning is performed when you turn AT_L1 in the OUT area to ON (= set to 1). Please make sure that AT_L1 in the OUT area turns OFF (= set to 0) after autotuning is finished.
Downstream from a UT with CC-Link communication (the Modbus master), the power to a controller connected via RS485 communication (the Modbus slave) went out. After the power to the controller was restored, communication did not restart. What should I do?
(ns-faq-ut-2179-spec)
Either set the SCAN parameter, or turn ON the rescan request flag on the PLC side.
I have the /LP option and I’m wiring a 2 wire transmitter power supply. How can I input a simulated current signal?
(ns-faq-ut-2239-connect)
Use a current generator with a SINK function (transmitter simulation).
How can I display the currently used PID no. on the operation screen?
(ns-faq-ut-2249-setting)
Turn OFF the U.PID parameter symbol in the setup parameter KLOC menu.
Even when I turn ON the power, nothing appears on the UT display.
(ns-faq-ut-2013-setting)
The display is blank if you turn ON the power while a a dedicated LL50A cable is plugged into the maintenance port. Try removing the cable and restarting.
I can't find a parameter I want to set.
(ns-faq-ut-2001-setting)
Please see the parameter map for your specific model. UTAdvanced Series Parameter Maps and Lists
Are communications with the FA-M3 possible?
(ns-faq-ut-2021-connect)
Yes. Use a UT link module for the FA-M3, and use PC link communications (RS-485) for the temperature controller communication protocol selection.
Can I use an RS-485 communication program written for the GREEN series (UT300/UT400/UT500/UP300/UP500/UM300) on a UT-Advanced series instrument?
(ns-faq-ut-2025-connect)
Program changes for reading PV and OUT, writing SP, and other basic parameters are not necessary. There are registers and relays that support the GREEN series. For details see the UTAdvanced series communication interface (RS-485, Ethernet) user'...
With the LL50A and UTAdvanced, can I perform RS-485 communications without a dedicated cable?
(ns-faq-ut-2051-connect)
Yes, if using a UTAdvanced series instrument with the RS-485 communication option. Set the RS-485 protocol on the main unit to 8 (MBRTU: Modbus RTU). The initial value is 8. Select RS-485 in the LL50A communication execution screen, and make the comm...
How can I display parameters that aren't displayed in the LL50A parameter setting software?
(ns-faq-ut-2052-soft)
If the LL50A's display setting is not PRO, some parameters won't display. Change the LL50A's display parameter as follows: Display > Parameter > Display level > Professional. The LL50A's display level must be set separately f...
Can I acquire trend data on the LL50A?
(ns-faq-ut-2053-soft)
You can display and acquire PV, SP, and OUT values as trend data. The trend data you acquire can be saved as a CSV file.
Are all COM terminals for contact input connected internally?
(ns-faq-ut-2061-spec)
Yes.
How can I enter initial settings?
(ns-faq-ut-2064-setting)
Please see an operation guide. Controller operation guides are available for standard and detailed models. (Ex.: UT55A-000-01-00 is a standard model, and UT55A-NNN-01-AN is an detailed model). Note that you can refer to the user's manual for any ...
B.OUT was displayed on the PV (measured value) display. What could be the cause of this?
(ns-faq-ut-2077-connect)
There might be breakage in a line. Check input wiring and sensors.If the input is restored, B.OUT will be cleared automatically.
There are differences between PV display values and the displays of other measuring instruments. Can I correct these?
(ns-faq-ut-2078-spec)
Yes, by using PV input bias (parameter BS).
Is a terminal cover included?
(ns-faq-ut-2088-select)
The UT52A, UT55A, UP55A, and UT75A come standard with terminal covers. For the UT32A, UT35A, UP35A, UP32A, and UM33A, specify the /CV option when order on or after May 31, 2015. They are also sold separately. Models: UTAP001UT75A, UT55A, UT35A, UP55A...
Can I set the PV display to -100 with 20 mA input, and to 0 with 4 mA input?
(ns-faq-ut-2089-setting)
In this case, 20 mA is the minimum value of PV input, and 4 mA is the maximum. In the setup parameter PV menu, set RH=4.00 and RL=20.00 (the input range maximum and minimum values). For the PV input scale max, min, and decimal place, set SH=0, SL=-10...
Can I switch the temperature units between°C and °F?
(ns-faq-ut-2087-spec)
Per the metering law, in Japan you can only use °C. For customers who require overseas-specification products that can display Fahrenheit for embedding in a device exported outside of Japan, please contact your dealer or Yokogawa representative. ...
I'm replacing my GREEN series with the UTAdvanced series. Is there anything I need to be careful of in terms of wiring?
(ns-faq-ut-2108-connect)
The common for all GREEN series alarm relay outputs are shared. In the UTAdvanced series, each alarm relay output has its own common. If used the same way, use external wiring to connect common to common.
What is the alarm standby function?
(ns-faq-ut-2111-spec)
Standby means that even when an alarm condition occurs it is ignored and the alarm stays off until the alarm condition ends. When the signal enters a non-alarm region, standby mode ends. Standby works in the following situation. When powering on ...
Are the control and alarm hysteresis values set as percentages?
(ns-faq-ut-2113-setting)
They are set with the same industrial quantities as the input units.
I'm using the UP35A and UP55A. Are PV and local event hysteresis values set with percentages?
(ns-faq-ut-2114-setting)
Yes, as a percentage of the PV input range span or output span.
How can I check the RS485 communication status?
(ns-faq-ut-2116-connect)
For communication errors, the left side decimal point of the symbol display on the main unit blinks. If the SD or RD indicators light on upstream devices, check whether both are blinking.
What is the minimum hold time that contact input can detect?
(ns-faq-ut-2121-spec)
For controllers, the status detection minimum hold time is the control interval + 50 ms. Also, for indicating alarms, it's the input sampling interval + 50 ms.
Does the UTAdvanced series support CCC and GB standards? Can it be used in China?
(ns-faq-ut-2124-spec)
The UTAdvanced series is not a CCC standard scope. Since it has acquired the GB standard, it can be used in China.
I want to stop the lamp indicator or action for unused alarms.
(ns-faq-ut-2136-setting)
Set alarm types AL1–4 or 8 (ALRM operation parameter) to 0.0.0.00.
Is there a limit on the number of times you can write to the D register via communication?
(ns-faq-ut-2140-spec)
No, there is no limit.
What should I do if DI input is not accepted on relay contacts?
(ns-faq-ut-2141-spec)
Use a relay that supports miniscule currents. The minimum ON current of a contact input (DI) is approximately 1 mA.
With 1-5 VDC input, can I make the PV display 0.00 to -10.00 kPa?
(ns-faq-ut-2156-setting)
Yes. Set the following: IN=1-5V, RH=1.000, RL=5.000, SDP=2, SH=0.00, SL=-10.00.
I'm using a thermocouple for the input, but "b.out" appears on the PV display. What should I check first?
(ns-faq-ut-2160-other)
“b.out” on the PV display indicates a break in the input. Check whether the signal from the sensor is getting through. Also, to narrow down the cause, you can short the input terminal of the UT itself, then if the UT's input is normal...
Can you tell me the inrush current value of the UTA series of instrument power?
(ns-faq-ut-2162-spec)
At DC24 V: Approximately 17 A, 1.5 ms At AC100 V: Approximately 4.5 A, 3 ms At AC240 V: Approximately 11 A, 3 ms
Can you tell me how to get the measurement accuracy when measuring 0 to 1000°C with a type K thermocouple? I selected input type K2 (-270.0 to 1000.0).
(ns-faq-ut-2163-spec)
Per the specifications, the accuracy of type K at 0°C or higher is ±0.1% ±1 digit. The measuring range in this case is that of the selected input type, -270.0 to 1000.0. You can calculate the accuracy as follows. ±0.1% of 127...
What is the measured current during RTD input?
(ns-faq-ut-2167-spec)
It is approximately 0.16 mA.
I'm pressing SET/ENTER on the front panel keys but I can't change the SP value.
(ns-faq-ut-2171-setting)
Check the key lock. If you see the R.SP display, in Remote mode (REM), that means SP is being set by an external (upstream, etc.) device and cannot be changed.
I set the UTA output to 10-segment linearizer approximation. Can the resulting output values be read via communication?
(ns-faq-ut-2177-spec)
Yes. The data will be -1500–31500. For the OUT terminal output, D7621(OUT_OUT) For the RET terminal output, D7624(RET_RET) For the OUT2 terminal output, D7623(OUT_OUT2L)  
How to connect one UT with CC-Link communication to another downstream UT via RS485. The RS485 communication terminal of the UT with CC-Link communication is a 2-wire system, and that of the other UT is a 4-wire system.
(ns-faq-ut-2187-connect)
Q: I'm connecting a UT with CC-Link communication to another downstream UT via RS485 communication (Modbus master function). However, the RS485 communication terminal of the UT with CC-Link communication is a 2-wire system, and that of the other ...
I want to check the suffix code but I can't see the name plate. Is there another way to check it?
(ns-faq-ut-2195-setting)
When you turn ON the power, it shows up on the self-diagnostic screen that appears for a few seconds. The 3-digit number in the SP display section is the basic suffix code. (Ex.) For the UT55A-210-01-00, the number "210" appears. ...
I'm using the Pt100 sensor. The PV input type IN parameters include PT1, PT2, and PT3, but which should I select?
(ns-faq-ut-2197-setting)
Select the type that is closest to the temperature range span that you are using.
Can I apply a 24 VDC voltage to a contact input?
(ns-faq-ut-2198-spec)
You cannot apply an external voltage. You can connect either a no-voltage contact or a transistor contact.
When installing the UTAdvanced series, what is the depth in millimeters from the surface of the panel?
(ns-faq-ut-2214-spec)
65 mm. For details, see the specifications of individual models.
Do you sell terminal covers?
(ns-faq-ut-2233-other)
Yes. Model: UTAP001 Supports: UT75A, UT55A, UT35A, UP55A, UT35A Model: UTAP002 Supports: UT52A, UT32A, UP32A, UM33A
Is it possible to connect multiple contact inputs to a single relay contact?
(ns-faq-ut-2243-connect)
No, use 1 contact per input. If you connect multiple inputs, when you turn OFF the UT, the impedance lowers and mis-operation can result.
Can I choose the color of the UTAdvanced terminal cover?
(ns-faq-ut-2246-spec)
No, it only comes in white.

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