Figure 4.16 Start Switch Connection Codes - Emerson Branson 2000X ae Operating Manual

4.5.8 Start Switch Connection (Automation)
A Branson actuator requires two start switches and emergency stop connection. Stands on
a base include this connection (factory installed and connected from the base) while the
stand on a hub and actuator (alone) applications require the user make their own start
switch/E-stop connections, as follows:

Figure 4.16 Start Switch Connection Codes

NOTICE
NOTICE
BASE/START is the DB-9 female connection on the back of the actuator. Your cable
requires a male DB-9 (D-shell) connector.
PB1 and PB2 are two normally open start-switches which must be operated
simultaneously to start the welding cycle. These must be closed within 200 milliseconds of
each other, or error message "Start Sw Time" will display. This doesn't require a reset, but
for the next cycle, switches must be within time limit to preclude re-occurrence of error
message. Refer to Note above.
EMER STOP is an emergency stop switch, normally closed.
58
Solid state devices may be used in lieu of mechanical start switches
providing their leakage current does not exceed 0.1mA.
Start Switches PB1 and PB2 must be closed within 200 milliseconds
of each other, and remain closed until the WELD ON signal is active,
to effect a start condition.
1019571 REV. 03