I/O Board Inputs And Outputs - Upright TM12 Service Manual

I/O Board Inputs and Outputs

3-8 I/O B
OARD
Refer to Figure Figure 3-5: "I/O Board," on page 3-7.
P
ERFORM
Battery state of charge will affect readings.
BV = B
ATTERY
Readings within a few volts of current battery state of charge will be called BV.
0V
0V is generally 0 up to 1 volt.
V
OLTAGE
Many factors can affect readings, such as state of charge, voltage drops through switches (mechanical or
electrical), and wires.
Be sure that both the Platform and Chassis Emergency Stop Switches are pulled out to the ON position.
All voltages are measured between the component and the B– terminal on the Motor Controller.
NOTE: For the I/O board to be powered up (Green LED illuminated), both E-Stops must be closed and either
Platform Controls or Chassis Controls selected by the Keyswitch.
Table 3-2: Connector J1
PIN PIN DESCRIPTION
J1-1 Lift input from Lift/Drive selector switch
J1-2 Not Used
J1-3 Drive input from Lift/Drive selector switch
Lower E-Stop activation
J1-4
(output from I/O board when lower E-Stop is closed)
Upper E-Stop activation
J1-5
(output to I/O board when upper E-Stop is closed)
J1-6 Power to Platform Controls when selected by Keyswitch
J1-7 Not Used
Controller direction "A"
J1-8
(up/forward)
Controller direction "B"
J1-9
(down/reverse)
J1-10 Speed signal from Control Handle
J1-11 Steer Left input from Steering switch
J1-12 Steer Right input from Steering switch
Page 3-8
I
NPUTS AND
T F
ESTS WITH ULLY
V
OLTAGE
R E
EADINGS FOR LECTRONICS ARE
O
UTPUTS
C B
HARGED ATTERIES
R
ARELY
CONDITION
Lift selected
Lift not selected
—
Drive selected
Drive not selected
Lower E-Stop closed
Lower E-Stop open
Upper E-Stop closed
Upper E-Stop open
Platform Controls selected
Platform Controls not selected
—
Control Handle pushed forward
Control Handle pushed forward
Signal starts high and drops proportionally as
Control Handle is moved in either direction
Steer Left selected
Steer Left not selected
Steer Right selected
Steer Right not selected
Section 3 - Troubleshooting
E
XACT
CONTINUOUS
VOLTAGE
TO PIN
BV
0V
—
BV
0V
BV
J4-9
0V
BV
J4-2
0V
BV
J4-10
0V
—
20-22V
20-22V
4.3V
dropping to
0.2V
23V
0V
23V
0V
107099-002 TM12 Work Platform
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