72×144×100 mm sized Digital Indicating Controller has clear bar graph display for PV, SV and MV. It comes with powerful 14 control modes, including optional Custom Computation and dual loop control. The universal input, auto-tuning, "SUPER" functions are standard. Position proportional control and RS485 communication are optionally available.


Application Note

Many industrial plants have embedded the PID controls for flow, temperature, pressure, level, etc. in PLC's on the plant floor. In the event of a PLC failure, the control to these critical loops may be lost. The US1000-11 may be configured to act as an automatic backup station and operator interface if PLC service has failed.


The US1000-11 Dual Loop Digital Indicating Controller can easily be implemented as a three element boiler drum level/feed water controller. Steam drum level control is necessary to add makeup water as steam is delivered into the header pipe. The level measurement and feed water flow input are the process variables (PV) for a cascade control strategy.


Chemical addition to a flowing liquid stream is an excellent control application for the US1000-00 Digital Loop Controller. In both water and waste water treatment, chlorine is added as a disinfectant. A residual chlorine analyzer provides the process variable to a closed loop PID controller.


The US1000-11 Digital Indicating Controller can be programmed to provide two functions, as a heat exchanger temperature controller and a BTU calculator. Why perform both functions? The temperature control is used to maintain a constant product temperature on the discharge side of the heat exchanger.


Yokogawa's US1000-11 Digital Indicating Controller is the newest member of the Measurement & Control Division family of industrial and process controllers. One application that can easily be implemented is a reactor cascade control, using product and steam jacket temperatures as the process variables (PV's).

Yokogawa Technical Report

A long time has passed since the word "downsizing" was first coined. In the field of instrumentation, total cost reduction is continually being sought, with this trend becoming even more accelerated as a result of the present economic recession.

The DI settings are made unavailable to protect the DI connection set in the custom computation tool. (in the same manner, the controller main unit also skips the display) If you want to change the U*M=21 DO, use the custom computation creation tool....
The software program LL200 (sold separately) is required for the UT750/UP750, and LL1200 (sold separately) is required for the US1000.
This is because the unit of the controller's user parameter differs from the unit specified in the parameter setting tool. You will have to either use the unit from the controller on the parameter setting tool, or use the custom computation build...
The DO settings are made unavailable to protect the DO connection set in the custom computation tool (in the same manner, the controller main unit also skips the display) If you want to change the U*M=21 DO, use the custom computation creation tool. ...
Can I order a custom computation?
No. Customers will need to create these themselves.
What models support custom computation?
UT750, UP750, and US1000-x1.
Is there any sample custom computation data?
Sample data is available for each control mode. We recommend that you modify these samples to create your own.
What is custom computation?
When using basic math, you can apply any correction to the input. When using logic, you can incorporate sequencing between the input and output contacts. Analog sequencing is also supported.
Can I set 5 alarms or more?
Yes, if using alarms within the upper/lower limit difference.
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.
This happens when SP tracking is turned ON in the setup parameters. Turn this parameter (SPT) OFF.
Yes. Use 1SP, 2SP, 4SP, and 8SP.
Yes, by setting RET=3(OUT). (Note that this is position proportional only.)
Can I control chemical dosing?
The auxiliary analog input function supports this with a ratio bias function.
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.
When switching with contacts, communication cannot be used.
Yes. The selection in the OT=0 to 3 setting in the setup parameters will be 1 output.
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,...
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)
Once input is set, IN is not displayed when you turn the power ON.
The DO206 items are used when in cascade control mode. For other modes, use DO201.
I can't switch the SP.
Check whether you are trying to switch it via communication, or whether it is the zone PID.
There is no control output.
Check whether MAN operation (manual) is selected for the output.
Set the following: P=100, I=D=OFF, DR=DIR (direct action), MR=0, SP=0.
Check whether you can output manually. If not, check wether OL (cooling output limiter)=100%.
Yes, if it is a heating/cooling type.
Why don't PID items appear?
They don't appear with OT=3 ON/OFF control.
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...
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.
DO215, used for communication, is not backed up.
Output stops when the status is STOP.
When RET=1 or 2, the STOP has no effect.
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.
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.
Set both item P on the heating side and item Pc on the cooling side to 0.0.
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 ...
No. When an alarm occurs, it automatically recovers if values enter the normal range.
Check that the operating parameters UPR and DNR are both OFF.
There are 2 types of output available, FAIL and "failure diagnosis."
The output is 0% if there is a hardware failure such as an internal microprocessor.
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.
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...
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.
The sensor wire on the input side might be broken or disconnected.
What are energize/de-energize alarms?
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.
If the operation mode is STOP or MAN, they are not displayed.
How do I change the input type?
If you change the input type, parameters will be initialized. We do not recommend that you make changes while in operation.
Yes, but if you change some parameters, others will be initialized. We do not recommend that you make changes while in operation.
Do Green series controllers support Ethernet?
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.
This is a protocol for communication with general purpose PCs and graphic panels. The UT130/UT150 can communicate with standard PCs. ...
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...
This is a limit on the number of times you can write to the element used (EEP-ROM).
These cannot be set when in Custom Computation mode.
Yes, the Auto tuning function.
What are direct and reverse action?
Generally, reverse action means heating control and direct action means cooling control. When output is reverse action, output is ON during PVSP.
600 Ω.
There is no current input range.
Use a resistor to input current as voltage. A resistor is available: X010-250-2 (250 Ω).
The are set with a real number. For temperature, it is set in degrees Celsius.
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...


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