Instruction manual

SM425 INSTRUCTION MANUAL 5.0 WIRING
1. Mount conduit hubs of the specified thread size or cable glands to the wiring connections of the
detector. The detector may need to be removed in future for maintenance, so allow sufficient
cable length.
2. If the ambient temperature at the location of wire installation is 80 to 150°C, use a flexible metallic
wire conduit. If a non-shielded 600V silicon rubber insulated glass braided wire is used, keep the
wire away from noise sources to avoid noise interference.
3. Figure 5-5 shows the layout of the detector terminals.
4. Except when “600V silicon rubber insulated glass braided wire” is used, connect the cable shield
to the “FG” terminal of the converter.
Figure 5-5 Detector terminals
The sizes of the terminal screw threads are M3.5 except for the M4 on the grounding terminal. Each wire
in the cable should be terminated in the corresponding size of crimp terminal (*1) respectively.
*1: If the ambient temperature at the detector installation site exceeds 60°C, use a “bare crimp-on
terminal”.
86 42500001 REV A