ENMET ISA-44-RALE-OD User Manual

Page 16

ENMET Corporation

ISA-44RALE-OD/ISA-44RAHE-OD/ISA-44E-OD

Figure 4: Interior Terminal Enclosure

Table 3: Wiring Information Terminal Enclosure

For ISA-44RALE-OD / ISA-44E-OD (when Purge and Horn are supplied)

Terminal

Enclosure

Connection

Signal

TB5-6

MOS Sensor Ground

TB5-7

MOS Sensor Heater

TB5-8

MOS Sensor Signal

TB5-2

CO High Alarm Relay, Common

TB5-1

CO High Alarm Relay, Normally Open

TB6-1

CO High Alarm Relay, Normally Closed

TB5-5

CO Low Alarm Relay, Common

TB5-4

CO Low Alarm Relay, Normally Open

TB5-3

CO Low Alarm Relay, Normally Closed

TB6-2

Oxygen Alarm Relay, Common

TB6-3

Oxygen Alarm Relay, Normally Open

TB4-1

AC Ground

TB4-2

110 V

(black)

TB4-3

110 V

(white)

NOTE: The terms "normally open" and "normally closed" correspond to the de-energized positions of the relay contacts.

The relays are energized during normal (non-alarm) channel operation, so the "normally open" position is closed
and the "normally closed" position is open during non-alarm channel operation. The relays are de-energized
during alarms or when power to the channel is interrupted.

Terminal
Block 6

Terminal
Block 5

Terminal

Block 4