Introduction
Outputs
Output Types - The UDC3200 may have up to five of the following outputs:
• Current Outputs (4-20 or 0-20 ma)
• Electromechanical Relays (5 amps)
• Solid State Relays (1 amp)
• Dual Electromechanical Relays (2 amps)
• Open Collector Outputs
Alarms
One or two electromechanical alarm relays are available to activate external equipment
when preset alarm setpoints are reached. Each of the two alarms can be set to monitor
two independent setpoints. Each alarm setpoint can be either high or low alarm. The
alarm type can be selected to be either of the inputs, the Process Variable, Deviation,
Output, Shed from communications, PV rate of change, or to alarm on manual mode
activation or a Current Output Open failure. It can also be used as an On or Off event at
the beginning or end of a Ramp/Soak segment. The alarm hysteresis is configurable from
0 to 100% of range.
• Alarms can be configured as latching or non-latching.
• Alarm blocking is also available which allows start-up without alarm energized
until after it first reaches the operating region.
• PV rate of change alarm.
• Loop break alarm.
• Timer output reset.
• Diagnostic Alarm
Communications
A communications link is provided between the UDC3200 and a host computer or PLC
via the RS422/485 Modbus® RTU or Ethernet TCP/IP communications option. An
infrared communication link is also available allowing a non-intrusive configuration of
the instrument.
Miscellaneous Features
Auxiliary Output*(optional) - Either or both of the two current outputs can function as
an Auxiliary Output which can be scaled from 4-20 ma for 0 to 100% for any range. It
can be configured to represent Input 1, Input 2, PV, active Setpoint, Local SP1,
Deviation, or the Control Output.
Transmitter Power - This output provides up to 30 volts dc to power a 2-wire transmitter
(it requires the use of alarm 2 open collector output selection or the second current
output).
12/04 UDC3200 Universal Digital Controller Product Manual 3
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