West Control Solutions MRC 7000 Recorder Manual User Manual
Page 51
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51
FIGURE A-2 - SPST RELAY/SSR DRIVER OUTPUT BOARD
If the relay is connected to a
high impedance AC device,
the snubber network used to
protect the relay contact may
cause the output to appear
to be activated when the
relay is off. To cure the
problem, cut the snubber
resistor for the output that is
being affected.
Resistor
Relay
R1
Relay A
R2
Relay B
R3
Relay C
R4
Relay D
R5
Relay E
R6
Relay F
TB6
TB7
TB8
TS1 R1
TS2
R2
TS3
R3
TS4
R4
TS5
R5
TS6
R6
C1 C2
C3
C4
C5
C6
K1
K2
K3
K4
K6
K5
P7
TB9
(rly A)
(rly C)
(rly B)
(rly D)
(rly E)
(rly F)
(rly G)
(rly H)
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