Helios Large Display Temperature Meter Instruction Manual
PD2-7000
12
Connections
All connections are made to screw terminal connectors located under the front door panel. Remove the
single securing screw in order to access the wiring terminals.
Caution
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.
Connectors Labeling
The connectors’ label, affixed to the inside of the lower door panel, shows the location of all connectors
available with requested configuration.
Warning!
Do not connect any equipment other than Precision Digital’s
expansion modules, cables, or meters to the RJ45 M-LINK connector.
Otherwise damage will occur to the equipment and the meter.
Do not disconnect the RJ45 connector located to the left of the power
terminal block. Doing so will disable the onboard digital I/O, RS-485
serial communications, and M-Link functionality.
Figure 6. Fully Loaded PD2-7000 Connections
Power Connections
Power connections are made to a two-terminal connector labeled POWER on Figure 6 on page 12. The
meter will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring
convention.
Figure 7. Power Connections
MA OUT
2
1
3
4
3
6
5
2
1
RELA Y4
RELA Y3
4
3
6
5
2
1
RELA Y2
RELA Y1
MENU
RESET
F1
MAX
F2
ENT ER
F3
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+ -
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