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4.1 POWER WIRING
AC Power
Terminal 1: VAC
Terminal 2: VAC
DC Power
Terminal 1: +VDC
Terminal 2: -VDC
4.2 USER INPUT WIRING
Before connecting the wires, the User Input Logic Jumper should be verified for proper position. Only the appropriate
User Input terminal has to be wired.
Sourcing Logic
Terminals 7-9:
+ VDC through external switching device
Terminal 10:
-VDC through external switching device
The user inputs of the meter are internally
pulled down to 0 V with 5.1 K resistance.
The input is active when a voltage greater
than 2.5 VDC is applied.
Sinking Logic
Terminals 7-9
Terminal 10
The user inputs of the meter are
internally pulled up to +12 V with
5.1 K resistance. The input is active
when it is pulled low (<0 .7 V).
Connect external switching device between the
appropriate User Input terminal and User Comm.
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4.3 INPUT WIRING
CAUTION: Sensor input common is NOT isolated from user input common. In order to preserve the safety of the meter application, the sensor input
common must be suitably isolated from hazardous live earth referenced voltage; or input common must be at protective earth ground potential. If not,
hazardous voltage may be present at the User Inputs and User Input Common terminals. Appropriate considerations must then be given to the potential
of the user input common with respect to earth ground; and the common of the isolated plug-in cards with respect to input common.
AC Inputs From Tach Generators, Etc. Two Wire Proximity, Current SourceMagnetic Pickup
Current Sourcing Output
Interfacing With TTLCurrent Sinking Output
Switch or Isolated Transistor; Current Sink
Switch or Isolated Transistor; Current Source
✻ Switch position is application dependent
Emitter Follower; Current Source
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