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37
A Technical Specifications
A.1 Electrical Specifications
Operating Voltage
18-32 VDC
Power Consumption
•
Without Heated Optic:
Max. 100 mA in Standby
Max. 150 mA in Alarm
•
With Heated Optic:
Max. 150 mA in Standby
Max. 200 mA in Alarm
Electric Input
Protection
The input circuit is protected against voltage-reversed polarity, voltage
transients, surges and spikes according to MIL-STD-1275B.
Electrical Interface
There are five output-wiring options. These options must be defined at
the factory per the customer order and cannot be changed at the
customer facility.
See
General Instructions for Electrical Wiring on page 40 for the
wiring/terminal diagram for each option.
Unless otherwise specified, the default is Option 1. The wiring
arrangement is identified on the detector by the part number (see
Model and Types on page 9).
•
Option 1 : Power, RS-485, 0-20mA (Sink), on HART protocol,
Fault I Relay (N.C), Alarm Relay, (N.O) (see Figure 7).
•
Option 2 : Power, RS-485, 0-20mA (Source), Fault Relay (N.O),
Alarm Relay, (N.O), (N.C).
•
Option 3 : Power, RS-485, 0-20mA (Source) and HART Protocol,
Fault Relay (N.O), Alarm Relay (N.O, N.C).
•
Option 4 : Power, RS-485, Fault Relay (N.C), Auxiliary Relay
(N.O), Alarm Relay, (N.O).
•
Option 5 : Power, RS-485, Fault Relay (N.O), Auxiliary Relay
(N.O), Alarm Relay, (N.O).
Electrical Outputs
•
Dry Contact Relays
Table 23: Contact Ratings
Relay Name Type Normal
Position Maximum Ratings
Alarm DPST N.O., N.C. 2A at 30 VDC or
0.5A at 250 VAC
Auxiliary SPST N.O. 5A at 30 VDC or
250 VAC
Fault * SPST N.C. or N.O 5A at 30 VDC or
250 VAC
Notes:
•
The Fault relay (in wiring options 1, 2, 4) is normally
energized closed during normal operation of the detector.
The relay is de-energized open if a fault condition or low
voltage situation occurs.