Upright TM12 Service Manual page 74

I/O Board Inputs and Outputs
Table 3-5: Connector J4
PIN PIN DESCRIPTION
J4-1 Motor Start relay and Hourmeter activation
J4-2 24 Volt supply to Keyswitch
J4-3 Chassis Controls selected from Keyswitch
J4-4 24 Volt supply to chassis Up/Down switch
J4-5 24 Volt supply to Keyswitch
J4-6 Not Used
J4-7 Up signal from Chassis Controls
J4-8 Down signal from Chassis Controls
Lower E-Stop activation
J4-9
(input to I/O board when E-Stop is closed)
J4-10 Power output to Platform Controls
J4-11 Battery negative supply to I/O Board
J4-12 24 Volt supply to Hourmeter and Line Contactor coil
Table 3-6: Connector J5
PIN PIN DESCRIPTION
J5-1 24 Volt supply to EMC motor controller
J5-2 Drive signal to EMC motor controller
J5-3 Steer signal to EMC motor controller
J5-4 Up signal to EMC motor controller
J5-5 Speed Reduction signal to EMC motor controller
J5-6 Line Contactor activation signal
J5-7 Direction enable
J5-8 Speed signal to EMC motor controller
Page 3-10
‡ Keyswitch must be held to Chassis Controls position to measure BV
CONDITION
Drive, Lift or Steer requested
Drive, Lift or Steer not requested
Upper & Lower E-Stops closed
Upper or Lower E-Stop open
Chassis Controls selected
Chassis Controls not selected
—
Upper & Lower E-Stops closed
Upper or Lower E-Stop open
—
Up requested from Chassis Controls
Up not requested from Chassis Controls
Down requested from Chassis Controls
Down not requested from Chassis Controls
Lower E-Stop closed
Lower E-Stop open
Platform selected at Keyswitch
Platform not selected at Keyswitch
—
Upper & Lower E-Stops closed and
Platform Controls or Chassis Controls selected
CONDITION
Upper & Lower E-Stops closed and
Platform Controls or Chassis Controls selected
Forward/Reverse requested
Forward/Reverse not requested
Steer Right/Steer Left requested
Steer Right/Steer Left not requested
Up requested
Up not requested
Below Proximity switch
Above Proximity switch
Drive, Lift or Steer requested
Drive, Lift or Steer not requested
Forward/Reverse requested
Forward/Reverse not requested
Signal starts high and drops proportionally as
Control Handle is moved in either direction
107099-002 TM12 Work Platform
Section 3 - Troubleshooting
CONTINUOUS
VOLTAGE
TO PIN
0V
—
BV
BV
—
0V
BV
—
0V
‡ —
BV
J2-3 & J3-3
0V
— —
BV
—
0V
BV
—
0V
BV
J1-4
0V
BV
J1-6
0V
B– —
BV —
CONTINUOUS
VOLTAGE
TO PIN
BV —
15V
—
0V
15V
—
0V
15V
—
0V
15V - 17V
—
0V
0V
—
BV
0V
—
4.0V - 4.3V
4.3V
dropping to —
0.2V