Relay Outputs
RATINGS
Alarm1: 250 VAC @ 3 A or 30 VDC @ 3 A (resisitive load)
Alarm2, 3: 250 VAC @ 1 A or 30 VDC @ 1 A (resistive load)
ELECTRICAL NOISE
A suppressor (snubber) should be connected to each
SUPPRESSION
relay contact switching inductive loads, to prevent
disruption to the microprocessor's operation.
Recommended suppressor value: 0.1
μ
F/470
Ω
,
250 VAC (PDX6901)
DEADBAND
For alarm operations, 0-100% of full scale, user selectable
HIGH OR LOW
User may program each relay for high or low trip point
ALARM
TIME DELAY
0 to 99 minutes 59 seconds alarm trip delay for each alarm
FAIL-SAFE
Programmable
OPERATION
Independent for each alarm relay
AUTO INITIALIZATION When power is applied to the meter, alarm relays will
reflect the state of the input to the meter except standby
alarms.
Digital Inputs
CONFIGURATION
Two contacts, two operating modes
CONTACTS
Normally open switches (external excitation note required)
or open collector transistor
OPEN CIRCUIT
Approximately 5 VDC
VOLTAGE
LOGIC LEVELS
LO = 0 to 0.8 VDC, HI = 4.7 to 28 VDC
OPERATION MODES
Mode 1: Record and reset maximum and minimum display
values simultaneously. Mode 2: Record and reset maximum
and minimum display values independently.
Serial Communications
PROTOCOLS
Modbus (ASCII, RTU), PC software
UNIT ADDRESS
1 to 99 (Max 31 units connected)
BAUD RATE
600, 1200, 2400, 4800, 9600, 19200 bps, user selectable
RESPONSE TIME
0 to 100 ms delay response time
10 ms increments user selectable
DATA
7 or 8 bit user selectable
PARITY
None, even, or odd
Approvals
UL RECOGNIZED
USA and Canada
Process Control Equipment
UL FILE NUMBER
E244207
CE COMPLIANT
PD560 Series Nova Digital Process and Temperature Meter
Instruction Manual
9
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GlobalTestSupply
.com
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