Siemens MJ-5 - Page 87

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3) “TB-2” refers to the Terminal Block 2 – located inside the Cooper control panel
enclosure.
4) For Cooper regulators, (Cooper) TB-2 “VS” provides the “L” bushing voltage.
5) For Cooper regulators, the “S” bushing voltage is derived from the (optional)
“differential PT.”
6) The connection from (Cooper) TB-2 “V7” to (MJ-) P2A “P2” is only needed if
the regulator has a differential PT (for detecting the “S” bushing voltage).
MJ- Name
MJ- Terminal
Cooper Terminal
Description
HS
P2A-1
HS
Operation Counter
U112
P2A-2
NL
Neutral Pos. Switch
U2
P2A-8
VS
Sensing Voltage
C2
P2A-5
C3
Current Polarity
E
P2A-6
G
Voltage Ground
E1
P2A-7
C1
Current Ground
N/A*
*
VM*
Motor Voltage*
J
P2A-9
R3
Raise Output
K
P2A-10
L3
Lower Output
U11
P2A-12
DHR
Drag Hand Reset
* Typically, VM will be jumpered to VS inside the Cooper Control box.
Optionally, the jumper from P2B -11 to P2B-12 can be removed from the MJ- and VM can
be connected to P2B-11, U6 to provide a separate motor voltage to the MJ-.