HoneywellUDC1200 & UDC1700 Universal Digital Controllers Series Micro-Pro Specifications 51-52-03-35 June 2011

can be mounted in a 1/16 DIN panel cutout. 

The UDC1700 controller is housed in a 100 mm (3.94 

inches) deep case and can be mounted in a 1/8 DIN 

panel cutout. By using the pre-assembled mounting 

fixture delivered with the unit, you can easily and 

securely install the controller into the panel cutout. 

Modular plug-in construction allows rapid access and 

saves time. All inputs and outputs are connected on 

the rear terminal block by screws. 

Operator Interface 

Four display combinations are offered to the operator. 

The upper 4-digit 7-segment display is always 

dedicated to monitor the PV. The lower display can 

show: 

 SETPOINT (read only) 

 SETPOINT (adjustable) 

 RAMPING setpoint (ramp mode) 

 BLANK 

Universal Inputs 

All input types are available on any unit. Selection 

among the various types of inputs is made by prompt 

configuration. As soon as the Process Variable 

reaches the value of the input range limit, the controller 

displays a message. A sensor break indication is also 

provided. A configurable digital filter is available from 

0.5 seconds to 100.0 seconds. 

Outputs 

Three types of outputs (RELAY, SSR driver or DC linear) 

are selectable for three outputs, through the model selection 

guide or by adding a plug-in module for outputs 1, 2 and 3. 

Outputs Algorithm 

The UDC1200 and UDC1700 are available with the 

following output algorithms: 

 Time proportional: 

ON/OFF or time proportional with 

electromechanical relay SPDT 2 A or SSR driver 

(open collector). 

 Current proportional: 

Supply directly proportional current or voltage 

signal to the final control elements which require 0-

20 mA, 4 20 mA, 0-10 V or 0-5 V. 

 Time proportional duplex: 

Three duplex modes can be selected, either 

ON/OFF duplex, time proportional duplex 

(heat/cool with two proportional bands, two cycle 

times and deadband) or TPSC. 

 Current proportional duplex: 

In addition to the first current/voltage output, a 

second similar output with its own proportional 

band is provided. 

 Current/Time or Time/Current duplex: 

Provides a variation of traditional time or current 

duplex mode by mixing current and time 

proportioning together. 

Control Algorithms 

Four control algorithms can be set up through the 

configuration menu: 

 On/Off  PID 

 PD + MR  TPSC 

The TPSC (Three Position Step Control) control algorithm is 

dedicated to control valve positioning without slidewire 

feedback from the motor shaft. 

Configuration 

There are two levels of configuration. The SET-UP 

mode allows modification of current parameters such 

as tuning parameters, alarm values, setpoint limit, 

ramp enable, auto-manual mode enable and autopretune enable. 

The CONFIGURATION mode is more oriented to unit 

personality: input selection, output 2 and 3 usage, 

alarm type, communication address and lockout code. 

The operator mode screens are only selectable via the 

configuration software only. For instance, the alarm 

value screen can be moved from setup mode to 

normal operator mode if desired. 

Control Mode 

Manual or automatic mode with bumpless transfer is 

standard feature. In manual mode, the operator can 

directly control the output through the two front face 

keys (raise and lower keys). The output value is 

monitored on the lower display. 

Alarms 

Outputs 1, 2 and 3 can be used as alarms. Two 

electromechanical single pole double throw relays can 

activate external equipment when alarm setpoints are 

reached. An LED is also activated on the front-face. A 

direct or reverse acting alarm output can be 

configured. A logical combination of the two alarms: 

OR, AND or hysteresis (active when both alarms are 

active and inactive when both alarms are inactive) can 

be set which associates the two alarms status before 

energizing the relay. In order to detect a defective 

control loop, the controller can supply special loop 

alarm control by continually monitoring the PV 

response to output demand. A timer is automatically 

set up when any output is on saturation mode. When 

the timer reaches twice the reset time with no PV 

response, the loop alarm is activated. With this soft 

alarm there is no need for a heater circuit breaker, 

saving wiring time and costs. 

Display 

Dual, four-digit LED display with decimal point location 

configurable up to three places for linear ranges only. 

Limit Controller 

The UDC1200 1/16 DIN limit controller provides a latched 

relay output which is activated when the process parameters 

either exceed or fall bellow the desired value, providing a 

failsafe cut-off which has to be manually reset before the 

process can continue. 

The UDC1200 limit controller can be configured to be either