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4 Pelco Manual C534M (2/98)
2.0 DESCRIPTION
The Relay Interface units of the CM9750-REL Series provide up to 32 relay con-
tacts for operating external equipment such as VCRs and lights. (The unit is shipped
from the factory equipped with 16 outputs.) Each of the relays can be configured for
normally open or normally closed operation by the placement of internal jumpers.
The unit is shipped with the contacts in the normally open position. Each Relay
Interface unit provides outputs for four GPIs (each GPI controls 8 relays). Refer to
Figure 1 for the front and rear view of the unit.
2.1 MODELS
CM9750-REL16 Provides 16 relay outputs. Includes transformer to convert 120
VAC to 24 VDC.
CM9750-REL16-X Same as CM9750-REL16 except has 230 VAC transformer.
System 9750
Relay Interface
POWER INPUT
RELAYS 21 - 32
RELAYS 11 - 20 RELAYS 1 - 10
FUSE
RELAY 32
INPUT FROM
CM9750/CM9760
RELAY 1
TYPICAL FOR ALL
RELAY OUTPUTS
Figure 1. Front and Rear Views of the CM9750/CM9760 Relay Interface Unit