Page 97
45-J Desel - Servce & Parts Manual
January 2022
Secton 19 - Troubleshootng
Valve Constant Current Module and Terminal Block Module
Valve Constant Current Modules (VCCM)
The Valve Constant Current Module is an
auxiliary module located inside the lower
control box. It controls certain proportional
functions of the machine.
ART_4969
1
3
1
3
P11
P1
P2
P3
P4
P5
P6
P12
P13
P12
P12-1
P12-2
P12-3
CAN HI
CAN LO
SHIELD
P13
P12-1
P12-2
P12-3
CAN HI
CAN LO
SHIELD
P11
P11-1
P11-2
B+
B-
P1
P1-1
P1-2
PLATFORM LEVEL UP
PLATFORM LEVEL UP GROUND
P2
P2-1
P2-2
PLATFORM LEVEL DOWN
PLATFORM LEVEL DOWN GROUND
P3
P3-1
P3-2
BOOM UP
BOOM UP GROUND
P4
P4-1
P4-2
BOOM DOWN
BOOM DOWN GROUND
P5
P5-1
P5-2
DRIVE FWD
DRIVE FWD GROUND
P6
P6-1
P6-2
DRIVE REV
DRIVE REV GROUND
Terminal Block Module (TBM)
The Terminal Block Module (TBM) is a
module inside the lower control box that
provides terminal point connections for both
positive and ground circuits. A signal from
the Emergency Stop circuit activates a load-
reduction relay within the TBM that provides
ample power to the B+ (positive) terminal
strip. This arrangement protects the system
against voltage drop conditions that can be
detrimental to the electrical system.
GROUND
(B−) Connection
PLATFORM Selected
BASE Selected
ANALOG (AMP)
COMMON B+
POSITIVE OUTPUT
(B+) Supply
To various circuits
ART_3186
