I/O Board Inputs and Outputs
Section 3 - Troubleshooting
Page 3-10
114101-000 X26 Ultra Narrow - Service Manual
Table 3-5:
Connector J4
Table 3-6:
Connector J5
PIN
PIN DESCRIPTION
CONDITION
VOLTAGE
CONTINUOUS
TO PIN
J4-1
Motor Start relay and Hourmeter activation
Drive, Lift or Steer requested
0V
—
Drive, Lift or Steer not requested
BV
J4-2
24 Volt supply to Keyswitch
Upper & Lower E-Stops closed
BV
—
Upper or Lower E-Stop open
0V
J4-3
Chassis Controls selected from Keyswitch
Chassis Controls selected
BV
—
Chassis Controls not selected
0V
J4-4
24 Volt supply to chassis Up/Down switch
—
‡
—
‡ Keyswitch must be held to Chassis Controls position to measure BV
J4-5
24 Volt supply to Keyswitch
Upper & Lower E-Stops closed
BV
J2-3 & J3-3
Upper or Lower E-Stop open
0V
J4-6
Not Used
—
—
—
J4-7
Up signal from Chassis Controls
Up requested from Chassis Controls
BV
—
Up not requested from Chassis Controls
0V
J4-8
Down signal from Chassis Controls
Down requested from Chassis Controls
BV
—
Down not requested from Chassis Controls
0V
J4-9
Lower E-Stop activation
(input to I/O board when E-Stop is closed)
Lower E-Stop closed
BV
J1-4
Lower E-Stop open
0V
J4-10
Power output to Platform Controls
Platform selected at Keyswitch
BV
J1-6
Platform not selected at Keyswitch
0V
J4-11
Battery negative supply to I/O Board
—
B–
—
J4-12
24 Volt supply to Hourmeter and Line Contactor coil
Upper & Lower E-Stops closed and
Platform Controls or Chassis Controls selected
BV
—
PIN
PIN DESCRIPTION
CONDITION
VOLTAGE
CONTINUOUS
TO PIN
J5-1
24 Volt supply to EMC motor controller
Upper & Lower E-Stops closed and
Platform Controls or Chassis Controls selected
BV
—
J5-2
Drive signal to EMC motor controller
Forward/Reverse requested
15V
—
Forward/Reverse not requested
0V
J5-3
Steer signal to EMC motor controller
Steer Right/Steer Left requested
15V
—
Steer Right/Steer Left not requested
0V
J5-4
Up signal to EMC motor controller
Up requested
15V
—
Up not requested
0V
J5-5
Speed Reduction signal to EMC motor controller
Below Proximity switch
15V - 17V
—
Above Proximity switch
0V
J5-6
Line Contactor activation signal
Drive, Lift or Steer requested
0V
—
Drive, Lift or Steer not requested
BV
J5-7
Direction enable
Forward/Reverse requested
0V
—
Forward/Reverse not requested
4.0V - 4.3V
J5-8
Speed signal to EMC motor controller
Signal starts high and drops proportionally as
Control Handle is moved in either direction
4.3V
dropping to
0.2V
—