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Optional 48 or 250VAC/DC High Voltage Signal Inputs
Systems using isolated 24VDC logic and optional H.V. signal supplies should be
connected as follows:-
Logic Supply
The 24VDC logic supply should be connected to the terminals VS and 0VS
on the logic rack. The logic is protected with a 5A fuse (F2) mounted on the rear of the
19” rack and a monitor LED is provided to indicate the status of the fuse.
Signal Supply
The high voltage signal supply, (+48 or 250VAC/DC), should be connected to the
signal supply input terminals VC in and OVC, this input is filtered and
protected with a 1A fuse (F1) and a monitor LED is provided to indicate the status of
the fuse.
The high voltage signal supply, (+48 or 250VAC/DC), is available on teVC
OUT for distribution to the associated signal input contacts.
Caution
:- High voltages will be present on all of the signal input circuits when the
associated contacts are in the closed position.
Please note- Each P925TS-I Input Card is equipped with a 3 pin header and 2 way
shorting bar that allows selection of inputs suitable for operation from 48VAC/DC or
250VAC/DC. Please ensure the jumper is in the correct position before applying
power.
+VC OUT
0VS
0VS
+VS
+VS
0VC IN
+VC IN
+VC OUT
+VS
P2
F2
F1
+VC OUT
P1
CONTACT FUSE 1A/F
RIBBON INPUT
RIBBON OUTPUT
24VDC
LOGIC SUPPLY
5
4
3
2
1
5
4
3
2
1
6
+VC OUT
SUPPLY FUSE 5A/T
FAIL
FAIL
6
0VS
CONTACT SUPPLY
RACK SUPPLY
HIGH VOLTAGE
SIGNAL SUPPLY
OUTPUT VOLTAGE
HIGH VOLTAGE
SIGNAL SUPPLY
INPUT VOLTAGE
24VDC Logic and Isolated High Voltage Signal Input Power Wiring