Winco DGC-2020 - Manual (Page 191)

Table 6-5. Sender Input Terminals
Terminal Description
8 (OIL) Oil pressure sender input
9 (FUEL) Fuel level sender input
10 (COOLANT) Coolant temperature sender input
11 (SENDER COM) Sender return terminal
Emergency Stop Input
The emergency stop input is intended for use with a normally closed switch and recognizes an
emergency stop input when the short-circuit across the input is removed. The ESTOP can be up to 75 ft
away from the DGC-2020 using a maximum wire length of 150 ft. Emergency stop input terminals are
listed in Table 6-6.
Table 6-6. Emergency Stop Input Terminals
Terminal Description
46 (ESTOP)
47 (ESTOP)
Emergency stop contact input
NOTE
Units with a board number (located on back of the unit) lower than 9400201139
may experience problems associated with ESTOP wire lengths greater than 2
feet (0.6 m). An interposing relay, connected as shown in Figure 6-3, alleviates
potential problems.
P
0
05
3-
9
3
Figure 6-3. Interposing Relay Diagram
The relay is the type that when the coil is NOT energized, the contacts are open.
When the coil is energized, the relay contacts are closed. The ESTOP button is
normally closed (i.e. closed when it is NOT pushed). The relay coil is always
energized when the ESTOP switch is closed (NOT pushed), so relay contacts
are closed in normal operation. When the ESTOP button is pushed, the ESTOP
switch opens, so relay contacts open, shutting down the unit.
9400200990 Rev K DGC-2020 Installation 6-5