Electrical system – 5000
Functional description
Order number
Date
Valid from serial number
T-code
226057-040
2005-09-23
914369-
675
© BT Europe AB
Service Manual
LWE130
12- 19
Table 7: Transistor regulator connections
Pin
Ref.
Description
A
Connector for signal control
A1
CPOT
Input from potentiometer wiper [R1]
A2
NLIFT
Connection for internal suppression / protection components
A3
PPOT
Provides a +ve voltage supply from the transistor regulator to the potentiome-
ter [R1], protected against short to B+ and B-
A4
TILLER
Input from tiller switch [S10], active high(B+)
A5
BELLY
Input from safety reversing switch [S20], used for immediate travel direction
reversal, active high (B+). 3K3 to B+ when released.
A6
FW
Input from travel in drive wheel direction switch [S16], active high (B+)
A7
REV
Input from travel in forks direction switch [S15], active high (B+)
A8
H&S
Reserved for future use
A9
NPOT
Provides -ve supply connection to potentiometer [R1]
A10
PLIFT
Input from fork lift control switch [S34]
A11
NEB
Output for electromagnetic brake coil [Y1], 1.5A continuous, protected against
short-circuit
A12
NLED
Output to drive Battery status indication LED [H81], 100mA max.
A13
PEVD
Input from fork lower control switch [S41]
A14
NMC
Output to Main contactor coil [K10], 1.0A continuous, protected against short-
circuit.
A15
PMC
Connection for suppression of main contactor [K10].
A16
KEY
Transistor regulator control supply, input from key switch [S17].
B
Connector for hand terminal
B1
--
B2
NCLRXD
-”-
B3
PCLTXD
-”-
B4
NCLTXD
-”-
B5
GND
-”-
B6
+12
-”-
B7
--
-”-
B8
--
Power connections
+B
Positive Supply from Battery
-B
Negative Supply from Battery
VMN
Negative Supply (via controller) to Motor
F1, F2
Connections to Drive Motor Field Winding
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