4 How to Use
4-5. How to wire
- 31 -
GD-D58 Series
<Grounding>
Connect the detector head
to your grounding terminal with the external grounding terminal.
<Wiring Example>
Connecting to the indicator/alarm unit
* The terminal plate number depends on the indicator/alarm unit. For details, see the operating manual of
the indicator/alarm unit.
3
5 6
1
GD-D58·AC
5
GP-5001+5000-02W,
etc.
2
4
6
TN2
TN1
3
4
Detector
head signal
Pump power
supply
100 - 110
VAC
2
1
Pump power
supply
100 - 110 VAC
Detector
head signal
3
5 6
1
GD-D58·AC
13
2
4
14
TN2
TN1
11
12
GP-5001+5000-SR,
etc.
WARNING
Before turning on the detector head, do not forget to connect it to a grounding terminal.
For stable operation of the detector head and safety, it must be connected to a grounding terminal.
Do not connect the grounding wire to a gas pipe.
The grounding must be made as D type grounding (below 100
Ω
of grounding resistance).
For the grounding wire, use cable lugs to safely connect it to a grounding terminal without looseness
or twist.
To connect the grounding wire to the internal grounding terminal of the unit, use a crimped
terminal to which a wire with a cross-section area of 4 mm
2
or more can be attached.
