GE Grid Solutions
D25
User's Manual
GE Information
994-0081-3.00-21
37
Digital Inputs,
Continued
Digital Inputs
External
Wetting
With External Wetting, operation of the digital inputs is essentially the same
as for Supplied Wetting, except that the voltage that is switched at the input
terminals is supplied by an external (non-D25) source. The external power
source is connected to pins 1 and 2 of Connector(s) A, C or E, for each of the
three Digital Input cards respectively.
Connections for digital input point number 1:
DC
Connector
A
Pin # 1 2 3 4 39 40
Input #1
Contacts
External Wetting
Power Supply
Voltage Detect
In this type of input, the D25 does not provide the wetting power source, from
either its own power supply, or from an external battery.
Note
: Pins 1 and 2 of Connector(s) A, C or E are jumpered for each board
using this configuration.
If using more than one external power source, they must share a common
return, and it must be connected to the “B” input termination for each input
point.
Connections for digital input point number 1:
Summary of Contents for D25
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