Precision Digital Corporation ProtEX-MAX PD8-6100, Instruction Manual

Page: 22 / 64

ProtEX-MAX PD8-6100 Strain Gauge, Load Cell, and mV Meter
Instruction Manual
22
Sensor Excitation Voltage
Selection (EX+, EX-)
All meters, including models equipped with the 12-24 VDC
power option, are shipped from the factory configured
to provide 10 VDC excitation for the sensor.
If the sensor requires 5 VDC excitation, the internal
jumper J3 must be configured accordingly.
To access the voltage selection jumper:
1. Remove all the wiring connectors.
2. Unscrew the back cover.
3. Slide out the back cover by about 1½ inches.
4. Configure the J3 jumper, located behind the
input signal connector, for the desired
excitation voltage as shown.
•
Do not use 24 V to power a strain gauge bridge.
The 24 V jumper configuration should only be
used for mV input applications from 4-wire
sensors.
Figure 3. Sensor Excitation Voltage Selection
Connections
All connections are made to removable screw
terminal connectors located at the rear of the
meter.
•
Use copper wire with 60°C or 60/75°C insulation
for all line voltage connections. Observe all safety
regulations. Electrical wiring should be performed
in accordance with all applicable national, state,
and local codes to prevent damage to the meter
and ensure personnel safety.
•
Observe all safety regulations. Electrical wiring
should be performed in accordance with all
agency requirements and applicable national,
state, and local codes to prevent damage to the
meter and ensure personnel safety.
•
Static electricity can damage sensitive components.
•
Observe safe handling precautions for
static-sensitive components.
•
Use proper grounding procedures/codes.
•
If the instrument is installed in a high voltage
environment and a fault or installation error occurs,
high voltage may be present on any lead or terminal.
•
Follow all fusing and wiring precautions
requirements for the instrument integrated to the
PD8 Series model number being connected.
To access the connectors, remove the enclosure
cover and unscrew the two captive screws that fasten
the electronics module. Signal connections are made
to de-pluggable connectors on the back of the
electronics module.
Some connectors may be provided already
connected. These connections are required for proper
operation of the ProtEX-MAX and should not be
removed unless instructed to by this manual.
Wires marked as being used for testing purposes
should be removed.
Grounding connections are made to the two ground
screws provided on the base
– one internal and one
external.
After all connections have been completed and
verified, apply power to the unit.
Required & Factory Wired
Connection
The ProtEX-MAX comes with a pre-wired connection.
This connection is detailed below and must be
maintained in order for the instrument to function
properly.
Figure 4. Integrated P
RO
V
U
Required Connections