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M
O D E S
O F
O
P E R A T I O N
Start/ Restart Interlock Mo
11
Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
5.2. S
TART
/ R
ESTART
I
NTERLOCK
M
ODE
By placing a jumper between terminals S11 and S12, (See
Figure 5-
2
) the unit is configured to Start/ Restart Interlock mode. When the
unit is configured to the Start/Restart Interlock mode, a reset push
button or key-switch must be wired to terminals Z1 and Z2. When
power is applied to the controller, the controller will initiate a start up
self check, when the self check is complete the relays will remain in
the open state until a reset pushbutton or key-switch is closed across
terminals Z1 and Z2. When the reset is closed, the contacts will
transition to the closed state. Pressing the Safety Edge will cause the
safety relays in the controller to transfer to the open state. When
pressure is removed from the Safety Edge, the safety relays
will not
transfer back to the closed state until the pushbutton or key-switch is
operated (Reset).
Table 5-1 Wiring Connections
X1, X2
Safety Edge Input
S11, S12
Install jumper for Start/Restart Interlock
Mode
B1, B2
Supply Voltage 24VAC/DC
Z1, Z2
Reset Pushbutton or Momentary Key-
switch
A1, A2
Supply Voltage 115 VAC 50/60 Hz
31, 32
Auxiliary Output
- SCC-1224: Contacts close when Safety
Edge is operated and Delayed To Open
after 1 to 3 seconds.
- SCC-1224ND: Contacts close when
Safety Edge is operated and remain closed
until the Safety Edge is returned to normal.
These contacts must never be used in the safety
circuit.
13, 14
Safety Output 1
23, 24
Safety Output 2
for Start/Restart Interlock