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Signal Processor
2.2.1 Alarm output connection schedule
The alarm output connection schedule is given in Fig. 5. The alarm relay
contact rating is 50V a.c. or d.c. at 0.5A.
NOTE
Each alarm is designed to be 'fail-safe'. i.e. if there is a loss of power to
the processor, the alarms will remain in an activated state until the power
supply is restored.
2.2.2 CMD (Command) input connection schedule
The CMD (Command) input connection schedule is given in Fig. 6.
The command signal is inactive when the voltage is >3.0V or open circuit
(i.e. track). The command signal is active when the voltage is <1.5V or short
circuit (i.e. hold).
The command input can be controlled via a remote switch, as shown in Fig.7,
or via potential-free contacts, as shown in Fig. 8.
Fig. 6 - 'CMD' (command) cable connection schedule
Page 12
Alarm Output
Pin Nº
Function
1
C
2
NO
3
NC
4
C
5
NO
6
NC
Fig. 5 - 'Alarm' cable connection schedule
CMD (Command) input
Pin Nº
Function
1
CMD+
2
CMD-
Description
Common
Normally Open
Alarm 1
Normally Closed
Common
Normally Open
Alarm 2
Normally Closed
Description
Command input drive
Command input
return
User Guide
238005
238006
LMG GS
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