HGM1790N Genset Controller User Manual                                                                      Page 14 of 31 
6.  WIRING CONNECTION 
 
Fig.2 Controller Back Panel 
Table 6 Terminals Description 
Connect to negative of starting battery   
Connected  to  positive  of  starting  battery.  If  wire 
length is over 30m, better to double wires in parallel. 
Max. 20A fuse is recommended. 
B+  voltage  input  is  active,  and  connected  to 
emergency stop normal closed button. 
B+ is supplied by No.3 point, rated 1A. 
B+ is supplied by No.3 point, rated 1A. 
Ground connected is active (B-) 
Ground connected is active (B-) if it is configured as 
digital input. 
Connect  to  low  fuel  level  coil  or  fuel  level  resistor 
type sensor if it is configured as level sensor. 
Connect  to  low  oil  pressure  coil  or  resistor  type 
sensor. 
Connect  to  high  water/cylinder  temp.  coil  or 
temperature resistor type sensor. 
Connect  to  speed  sensor,  and  shielded  wire  is 
recommended.   
The other end of speed sensor is connected to B-. 
Connect to generator voltage output port. (2A fuse is