Trident Model PD765 Universal Input Meter Instruction Manual
10
Relays Option
RATING
2 SPDT (Form C); rated 3 A @ 30 VDC or 3 A @ 250 VAC
resistive load; 1/14 HP @ 125/250 VAC (50 watts) for induc-
tive loads
ELECTRICAL
NOISE
SUPPRESSION
A suppressor (snubber) should be connected to each relay
contact switching inductive loads to prevent disruption to the
microprocessor’s operation.
Recommended suppressor value: 0.01 µF/470
Ω
, 250 VAC
(PDX6901).
DEADBAND
0-100% of full scale, user selectable
HIGH OR LOW
ALARM
User may program any alarm for high or low trip point.
RELAY
OPERATION
Automatic (non-latching)
Latching
Pump alternation control
RELAY RESET
User selectable via front panel buttons or PC
Automatic reset only (non-latching)
Aut manual reset at any time (non-latching)
Manual reset only, at any time (latching)
Manual reset only after alarm condition has cleared (latching)
Automatic reset: Relays will automatically reset when the in-
put passes the reset point.
Manual reset: Front panel ACK button. Pressing ACK re-
sets all manually resettable relays.
TIME DELAY
0 to 199 seconds, on and off delays
Programmable and independent for each relay
FAIL-SAFE
OPERATION
Programmable
Independent for each relay
AUTO
INITIALIZATION
When power is applied to the meter, relays will reflect the
state of the input to the meter.
Fail-safe operation:
relay coil is energized in non-alarm condition. In
case of power failure, relay will go to alarm state.
www.
GlobalTestSupply
.com
Find Quality Products Online at: