TM 5-3895-374-24-2
955-257
1.12 WIRING FOR ANALOG OUTPUT PRIMARY AND/OR SECONDARY (4/20 mADC OR 0/5VDC OUTPUT)
The part number will specify which outputs are included
in each unit. Since the Solid State Relay and Analog
Output use the same terminals only one type can be
provided on each output. Output type is not changeable
in the field.
NOTE:
Maximum Load Resistance = 1K for
4/20 mA output.
Minimum Load Resistance = 1K for 0-5
VDC output.
Standard controllers with analog output(s) have a common connection between the input and output circuits. Grounding
both input and output may cause controller damage and loss of control. Isolated input or output are available if required.
1.13 ALARM/TIMER RELAY WIRING
Two independent electromechanical alarm relays rated 1 amp at 240 VAC resistive load are included. Both normally open
(NO) and normally closed (NC) terminals are provided with one common return (C) for each relay.
Terminal designations normally refer to the de-energized state i.e. no power to the relays. To provide reliable alarm
indication, the relays in this controller are energized during normal operation of the controller. When wiring to these relays
be sure to keep this in mind. Before power is applied to the controller and when the alarm(s) is ON, the relay terminal
designations are as shown below. During normal operation with no alarms ON, the relays are the reverse of that shown
below.
Special care should be taken when wiring these relays to inductive devices such as coils and transformers. Noise
suppressors as shown on the diagram are important to prevent electrical noise from being generated. See Section 1.6.
The Part Number specifies the type of Alarm/Timer relay action. Alarm/Timer relay action can be reconfigured if required
without having to rewire the relay by following the instructions in Section 6.
ECLIPSE INSTRUMENTATION DIVISION
page 3 - 1086
