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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