Specifications

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8
WVRC-4 Installation and Operation Manual
INSTALLATION
Connecting your WVRC-4 to other equipment
Analog (metering) inputs
CAUTION! Analog input (metering) samples may be elevated several hundred
volts above ground on some external equipment. Permanent damage may occur to
the WVRC-4 and/or external equipment if a high voltage metering source is con-
nected to the WVRC-4! Failure to observe this warning may also cause injury to the
installer or other personnel.
CAUTION! Floating Grounds
Except for all status (wet) inputs, none of the WVRC-4’s metering inputs will accept
a floating ground. Damage to the WVRC-4 or your equipment may result from con-
necting a floating ground output to the WVRC-4. If you require metering inputs
with equipment that has a floating ground, an isolation DC amplifier must be used.
Four analog (metering) channels are connected to the WVRC-4 via depluggable
euro-block screw terminals. Connect the positive side of the source to the desired
channel terminal labeled ANx (where x is the channel number 1 through 4) and asso-
ciated GND (ground) terminal. Each analog (metering) input can handle up to (pos-
itive only) 10 volts DC and must be ground referenced. Connect your metering
ground to the associated ground terminal. Inputs are self-calibrating and are based
on an internal A/D converter with a precision, low-drift voltage reference, so the
reading should not drift over time or with temperature. Analog (metering) setup is
performed by connecting the sample voltage to the analog (metering) input, then
programming the WVRC-4 for the desired value (reading).
CAUTION!
DO NOT CONNECT
SAMPLE VOLTAGES
IN EXCESS OF POSI-
TIVE 10 VDC OR
DAMAGE MAY
OCCUR TO YOUR
WVRC-4.
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