SAF OP-STOP DCI User Manual
Page 14
OP-STOP DC INJECTION BRAKE
Page 9
3.4 TERMINALS
3.4.1 CUSTOMER TERMINALS
TERMINAL
NO.
DESCRIPTION
J2
L1, N 115 VAC control voltage input, L1 being hot and N, neutral
L1 input is protected with internal fuse, 1A 250VAC
J4
1, 2
115 VAC supply for external interlock contacts
3.0
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 SAF OPAL starter in conjuction with the OP-
STOP, this terminal is to be jumpered to terminal 1 or 2
4.0
When 115VAC from terminals 1 or 2 is applied to this input,
braking is disabled
Apply 115 VAC to this input to disable the brake
5.0
Common DCI relay contact
The Form-C relay is de-energized while braking and when a
fault exists
6.0
Normally open DCI relay auxiliary contact
-7.0
Normally closed DCI relay auxiliary contact
R7
1, 2
Burden resistor terminals for calibration of DC injection
current
See table in Section 4.4
3.4.2 TERMINALS FOR INTERNAL USE
TERMINAL
NO.
DESCRIPTION
J1
24V, COM This terminal is used by SAF as a 24V input to provide
battery back up for DC injection in case of power loss
J3
1, 2
CURRENT FBK
From current transformer for motor current feedback
J5
1, 2
MOTOR VFBK
From T1, T2 motor terminals for motor voltage feedback
SCR1
G1, K1
Gate connection to SCR 1
SCR2
G2, K2
Gate connection to SCR 2
SCR3
G3, K3
Gate connection to SCR 3
SCR4
G4, K4
Gate connection to SCR 4
OPT 1-20
Provided for ribbon cable link to SAF's OPAL starter
This provides signals from the OPAL to the OP-STOP that
indicate the run status of the starter, replacing the auxiliary
input and prevents starting during DC injection or a fault