87
5.3
Relays
Note. Refer to rear fold-out/ Table B –
Output Sources for default relay assigments.
Relay contacts are rated at:
115/230V a.c. at 5A (non-inductive)
250V d.c. 25W max.
5.3.1
Setting the Relay Links – Fig. 5.10
Set the links on the processor board and the option
board (if fitted).
5.4
Digital Output
15V d.c. min. at 20mA
Min. load 750
Ω
5.5
Control or Retransmission
Analog Output
Max. load 15V (750
Ω
at 20mA).
Isolated from analog input, dielectric strength
500V for 1 minute.
5
INSTALLATION…
Fig. 5.10 Relay Links
Note. The default setting for the relay links is 'Normally Open' (N/O).
Processor Board
LK3
LK4
Normally open
Normally closed
LK1
LK2
Option Board
LK1 = Relay 1
LK2 = Relay 2
LK3 = Relay 3
LK4 = Relay 4