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UT550 Digital Indicating Controller
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UT550 Digital Indicating Controller

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Yokogawa Technical Report
Common Functions Of The Green Series Of Temperature Controllers
(rd-tr-r00023-009)
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Prehľad:

In order to meet user needs, the Green series of controllers has not only been equipped with control computation systems, "Super" overshoot suppressing function and generous alarm functions proven on existing models, but have also been fitted with a number of new functions. communication, ladder communication and coordinated operation.

Odvetvia:
Is ON/OFF of the reset specinal a one shot contact? Or is it a status contact?
(ns-faq-green-9026-spec)
It is a one shot contact.
Suddenly "t5500" was displayed on the UT550.
(ns-faq-green-9083-spec)
This is the self-diagnostic screen. It does not indicate an abnormality.
Can I set 5 alarms or more?
(ns-faq-green-9077-spec)
Yes, if using alarms within the upper/lower limit difference.
Can I switch 1SP/2SP with one DI of UT520/UT550/UT750?
(ns-faq-green-9054-spec)
If you set the registered contact input parameters to SP.0=5353 and SP.1=5545, you can select 1SP with ON and 2SP with OFF.
Can I set the operation mode to DO and then perform contact output?
(ns-faq-green-9047-spec)
This is possible with the UT500/UT700. With the registered contact output parameters, assign relay number in each mode.
Can I change the alarm output terminal?
(ns-faq-green-9073-spec)
Yes, by changing assignments in the registered contact output parameters (UT500/UT700 only).
Can you give me details on the "Super2" function? (Affected products:Green series)
(ns-faq-green-9003-term)
Even when you expand the applicable range of the PID constant, the process states fluctuate, or response is unstable and hunting occurs (control responses fluctuate), this function is effective for stabilizing control and suppressing hunting. Normall...
What is assisted operation? (Affected products: Green series)
(ns-faq-green-9007-term)
With a UP program controller or UT digital indicating controller as the parent station and multiple UT digital indicating controllers as the child stations, the children perform the same actions that are carried out on the parent. ...
What is the output upon reset?
(ns-faq-green-9027-spec)
It is the preset output.
Can I output an opening (aperture) signal from a valve?
(ns-faq-green-9029-spec)
Yes, by setting RET=3(OUT). (Note that this is position proportional only.)
Can I switch four SPs with two DIs of UT520/UT550/UT750?
(ns-faq-green-9055-spec)
Yes. Use 1SP, 2SP, 4SP, and 8SP.
Can I control chemical dosing?
(ns-faq-green-9023-spec)
The auxiliary analog input function supports this with a ratio bias function.
The SP value was rewritten after switching from remote mode to local mode.
(ns-faq-green-9024-spec)
This happens when SP tracking is turned ON in the setup parameters. Turn this parameter (SPT) OFF.
On what models can the SP value can be changed with external analog signals?
(ns-faq-green-9022-spec)
This is supported on UTAdvanded series UT52A / UT55A / UT75A / UP55A.
What is the delay timer in the alarm function?
(ns-faq-green-9074-term)
This is a function in which output occurs a specified time after an alarm set point is exceeded. If you clear the alarm point during operation of the timer, the timer is reset.
I'm trying to do RUN/STOP via communication by writing 0/1 to DO205, but it's not working.
(ns-faq-green-9050-spec)
When switching with contacts, communication cannot be used.
Can I use a heating/cooling type of 1 output?
(ns-faq-green-9069-spec)
Yes. The selection in the OT=0 to 3 setting in the setup parameters will be 1 output.
Can you tell me about the 15 VDC transmitter power supply function?
(ns-faq-green-9030-spec)
This function supplies power to 2-wire transmitters. It differs depending on the specifications of the transmitter, but the input accepts 100 Ω resistors. 100 Ω resistor (model: X010-100-2, sold seperately)
IN is not displayed the first time I turn the power ON.
(ns-faq-green-9013-spec)
Once input is set, IN is not displayed when you turn the power ON.
I can't switch the SP.
(ns-faq-green-9053-spec)
Check whether you are trying to switch it via communication, or whether it is the zone PID.
I'm trying to do AUTO/MAN via communication by writing 0/1 to DO206, but it's not working.
(ns-faq-green-9051-spec)
The DO206 items are used when in cascade control mode. For other modes, use DO201.
Why is there no output on the cooling side?
(ns-faq-green-9068-spec)
Check whether you can output manually. If not, check wether OL (cooling output limiter)=100%.
There is no control output.
(ns-faq-green-9085-spec)
Check whether MAN operation (manual) is selected for the output.
What settings can I use to get control output that is proportional to the input?
(ns-faq-green-9045-setting)
Set the following: P=100, I=D=OFF, DR=DIR (direct action), MR=0, SP=0.
Are there independent PIDs for heating and cooling?
(ns-faq-green-9070-spec)
Yes, if it is a heating/cooling type.
Why don't PID items appear?
(ns-faq-green-9044-spec)
They don't appear with OT=3 ON/OFF control.
What PID should be used for remote input?
(ns-faq-green-9025-spec)
With the UT300 series, only use 1PID. With UT400/500/700 models, the PID used just prior to switching to remote input is used. When using SP switching during remote input, only the PID switches.
When should I use sensor power supplies (affected models: certain Green series instruments)?
(ns-faq-green-9008-spec)
These are used when 2-wire transmitters are used in the field. They provide cost savings since they do not need to be purchased separately. 24 V (21.6–28.0 VDC, 30 mA MAX) sensor power supplies can be specified with the following models: UT551,...
Output stops when the status is STOP.
(ns-faq-green-9031-spec)
When RET=1 or 2, the STOP has no effect.
Can I perform CC-Link communication?
(ns-faq-green-9035-connect)
Yes, by using the UTAdvanced series.
What are the PID switching methods?
(ns-faq-green-9041-spec)
There is a zone, contact, and parameter switching method.
How many PID groups can be used?
(ns-faq-green-9040-spec)
4 groups for the UT300 series, and 8 groups for the UT400/500/700 series.
The SP data written via communication is deleted when I turn the power ON/OFF.
(ns-faq-green-9038-spec)
DO215, used for communication, is not backed up.
What models are supported by the LL100/LL200?
(ns-faq-green-9088-soft)
The UT300/400/500/700 series, and the UP350/351/550/750. However, the LL200 custom computation function is only compatible with the UT750/UP750.
Can I convert GREEN series (UT300/UT400/UT500/UP500) parameters for use with the UTAdvanced series?
(ns-faq-ut-2060-soft)
Yes, you can use the GREEN-UTAdvanced parameter data conversion tool (available as free download). Using the LL100/LL200 parameter setting tool, save the GREEN series parameters to a file, convert them using the conversion tool, then apply the settin...
I want to convert my old controller (GREEN series) parameter data for the UTAdvanced series. Is there a program for that?
(ns-faq-ut-2222-soft)
Yes. Software for converting your existing controller parameter data for use with the UTAdvanced series is available for download free of charge. GREEN to UTAdvanced Conversion Tool *Log-in Required ...
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...
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.
When I change the SP and press SET/ENT, it restoring the original value.
(ns-faq-green-9052-spec)
Check that the operating parameters UPR and DNR are both OFF.
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'...
Can you give me details on ladder communication? (Affected products: UT100 series, Green series)
(ns-faq-green-9005-term)
Ladder communication is a protocol for communication with PLCs. Aside from Yokogawa PLCs, you can communicate with Mitsubishi MELSEC-Q/A series calculator link units (using A1SJ71UC24-R4 or A1SJ71C24-R4). ...
Can you give me details on Modbus communication? (Affected products: UT100 series, Green series)
(ns-faq-green-9006-term)
This is a protocol for communication with general purpose PCs and graphic panels. The UT130/UT150 can communicate with standard PCs. ...
Is control output available on a failure?
(ns-faq-green-9084-spec)
The output is 0% if there is a hardware failure such as an internal microprocessor.
When I set up alarm values the parameters are initialized and I can't enter the settings.
(ns-faq-green-9071-setting)
Set them in the order, Alarm type → Alarm setting values. They will also not be displayed if you select an alarm for which no value is set.
What are direct and reverse action?
(ns-faq-green-9017-term)
Generally, reverse action means heating control and direct action means cooling control. When output is reverse action, output is ON during PVSP.
What are energize/de-energize alarms?
(ns-faq-green-9076-term)
For energize alarms, ON contact results when an alarm occurs. For de-energize alarms, OFF contact results when an alarm occurs. Note that OFF contact also results when the power fails.
Is there a function for resetting alarms?
(ns-faq-green-9075-spec)
No. When an alarm occurs, it automatically recovers if values enter the normal range.
What is the difference between + and - of the dead zone?
(ns-faq-green-9067-spec)
If you set + dead zone in the settings, you can get an area where no outputs occur. If you set - dead zone, you can get an area where both outputs occur at the same time.
Are contacts still good during malfunction?
(ns-faq-green-9081-spec)
There are 2 types of output available, FAIL and "failure diagnosis."
There is no indication on the display in the GREEN series.
(ns-faq-green-9082-spec)
Check whether the wiring to the power supply terminal is correct. If only the LCD on the UT/UP700 does not display, a custom computation may be set for no display. If the PV display is also blank, this may indicate product failure. Please contact you...
Please provide information about PCB usage. (GREEN series)
(ns-faq-green-9125-spec)
PCBs (polychlorinated biphenyl) were banned from manufacturing and imports in 1975. The GREEN series began to be manufactured in 1997, and do not include PCBs.
What should I do when b.out is displayed?
(ns-faq-green-9080-spec)
The sensor wire on the input side might be broken or disconnected.
Are current control output and transmission output isolated?
(ns-faq-green-9028-spec)
No.
Is ON/OFF available with heating/cooling control?
(ns-faq-green-9066-setting)
Set both item P on the heating side and item Pc on the cooling side to 0.0.
Is there a function for determining the PID?
(ns-faq-green-9039-spec)
Yes, the Auto tuning function.
How do I change the input type?
(ns-faq-green-9014-spec)
If you change the input type, parameters will be initialized. We do not recommend that you make changes while in operation.
Auto-tuning parameters (AT) don't appear.
(ns-faq-green-9043-spec)
If the operation mode is STOP or MAN, they are not displayed.
What registers are accessible in UT link's Auto mode?
(ns-faq-green-9049-spec)
It depends on the model. The following lists the readable registers by model. UT100 series: D0001–D0009 UT300 series: D0001–D0008 UT400/UT500/UT700 series: D0001–D0025 UP350: D0001–D0008 UP550/UP750: D0001–D0025 ...
Are the alarm setting values and hysteresis settings set with a percentage?
(ns-faq-green-9072-spec)
The are set with a real number. For temperature, it is set in degrees Celsius.
Can you give me details on PC link communication? (Affected products: UT100 series, Green series)
(ns-faq-green-9004-term)
This is a protocol for communication with general purpose PCs and graphic panels, and also the FA-M3: You can communicate with Yokogawa PLC range free controller UT link modules and serial communication modules. Also, you can easily connect with PLCs...
Can you give me details on the "Super" function? (Affected products:Green series)
(ns-faq-green-9002-term)
This is an overshoot suppression function that uses fuzzy logic. It constantly monitors deviation, and if it detects the possibility of an overshoot, it automatically changes the set point to a somewhat lower temp value (sub set point SSP). When y...
What protocol is used when communicating with the Mitsubishi Electric's sequencer?
(ns-faq-green-9037-connect)
Ladder communication is used when communicating with the Computer link unit/Serial communication unit. Modbus/RTU is used for communication with the Modbus communication module.
Do you offer programs for communication using calculator link units or serial communication units?
(ns-faq-green-9036-program)
Sample programs and dedicated communication materials are available for MELSEC-A/MELSEC-Q.
Is there a MELSEC series with verified connectivity?
(ns-faq-green-9033-select)
Yes, MELSEC-A, MELSEC-Q, and MELSEC-FX.
What items are accessible through a MELSEC connection?
(ns-faq-green-9034-spec)
Almost all items can be accessed, including PV reading, SP writing, and PID setting.
What is the write limit of 100,000 times?
(ns-faq-green-9046-spec)
This is a limit on the number of times you can write to the element used (EEP-ROM).
There is no current input range.
(ns-faq-green-9018-spec)
Use a resistor to input current as voltage. A resistor is available: X010-250-2 (250 Ω).
Do Green series controllers support Ethernet?
(ns-faq-green-9009-connect)
Yes. This requires an RS-485/Ethernet converter such as VJET. The controller must also have a communication option. Some models can be connected directly with the UTAdvanced series.
Can I write the PV value via communication?
(ns-faq-green-9048-spec)
The PV value can be written by using the ladder sequence function of UTAdvanced series. However, when communication is interrupted, the PV value is retained.
What is the maximum allowed load resistance?
(ns-faq-green-9032-spec)
600 Ω.
I can't set contact input register DI/contact output register DO.
(ns-faq-green-9016-spec)
These cannot be set when in Custom Computation mode.
Can I change setup parameters while the instrument is running?
(ns-faq-green-9015-spec)
Yes, but if you change some parameters, others will be initialized. We do not recommend that you make changes while in operation.

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