Terminals; Customer Terminals; Terminals For Internal Use - Eaton Cutler-Hammer TRU-START Operation And Installation Manual

3.4 TERMINALS

3.4.1 CUSTOMER TERMINALS

TERMINAL
J2
J4
R7

3.4.2 TERMINALS FOR INTERNAL USE

TERMINAL
J1
J3
J5
SCR1
SCR2
SCR3
SCR4
OPT
NO. DESCRIPTION
L1, N 115 VAC control voltage input, L1 being hot and N, neutral
L1 input is protected with internal fuse, 1A 250VAC
1, 2 115 VAC supply for external interlock contacts
3 A normally open contact from the motor starter auxiliary must
be connected between this teminal and terminals 1 or 2 to sense
when the starter is de-energized to enable braking action
When using a TRU-START starter in conjuction with the DC
Injection, this terminal is to be jumpered to terminal 1 or 2
4 When 115VAC from terminals 1 or 2 is applied to this input,
braking is disabled
5 Common DCI relay contact
The Form-C relay is de-energized while braking and when a
fault exists
6 Normally open DCI relay auxiliary contact
7 Normally closed DCI relay auxiliary contact
1, 2 Burden resistor terminals for calibration of DC injection current
See table in Section 4.4
NO. DESCRIPTION
24V, COM This terminal is used by C-H as a 24V input to provide
battery back up for DC injection in case of power loss
1, 2 CURRENT FBK
From current transformer for motor current feedback
1, 2 MOTOR VFBK
From T1, T2 motor terminals for motor voltage feedback
G1, K1 Gate connection to SCR 1
G2, K2 Gate connection to SCR 2
G3, K3 Gate connection to SCR 3
G4, K4 Gate connection to SCR 4
1-20 Provided for ribbon cable link to TRU-START starter
This provides signals from the TRU-START to the DCI that
indicate the run status of the starter, replacing the auxiliary
input and prevents starting during DC injection or a fault
PAGE 11