A-2B Relay (Spdt) Output Board - Partlow MRC 7800 Installation, Wiring, Operation Manual

P 48
AGE
FIGURE A-2B - Relay (SPDT) Output Board
TB6
TS1 R1
TS2
C1 C2
K1
P7
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.
TB7
TS4
R2 TS3 R3
C3
K2
Resistor
R1
R2
R3
R4
R5
R6
TB8
TS5 R5
R4
C4 C5
K3
TB9
Relay
Relay A N.O
Relay A N.C.
Relay B N.O.
Relay B N.C.
Relay C
Relay D
TS6 R6
C6
K4