Simtronics GD1 MK3, Operating Manual

Page: 12 / 76

GD1 Page 12 of 76 850-816926-EN R06
2.5. Electrical connection and wiring
Make sure that power is disconnected or switched off before connecting any wires.
The system supplying power to the GD1 shall have a fuse allowing maximum 1 A of
current to enter the GD1.
The detector must be earthed for electrical safety and to limit the effects of radio
frequency interference. Earth connection points are provided on the underside of the
GD1 housing and inside the Junction Box.
The connection terminals are accessed by removing the covers of the junction boxes.
Wiring diagrams are shown below. The system cable only goes to the transmitter unit. The
cable between the junction boxes carries the power to the receiver and the
communication signals. Unless otherwise instructed, please observe that the system power
and analogue output cable is terminated on the transmitter side of the GD1 system.