Figure 4.8 Start Switch Connection Codes - Emerson Branson 2000 Series Instruction Manual

100-214-251 IWoper.book Page 52 Friday, June 16, 2017 4:12 PM
Close and secure the cover door.
4.5.4 Start Switch Connection (Automation)
A Branson Integrated Welder requires 2 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 applications require the user make their own start switch/E-stop
connections, as follows:

Figure 4.8 Start Switch Connection Codes

NOTICE
Solid state devices may be used in lieu of mechanical start switches providing their
leakage current does not exceed 3.5 mA.
NOTICE
Start Switches PB1 and PB2 must be closed within 100 to 200 milliseconds of each
other, and remain closed until the WELD ON signal is active, to effect a start condition.
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: (ER28 or ER29) 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.
The welder can also be started by an EXTERNAL START signal. To do so, connect a J911
cable between the connector on the rear panel and your start signal (refer to
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Figure 2.5
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