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WELD SENTRY 2
REAR PANEL DESCRIPTION
A VOLTAGE INPUT - 3 pin receptacle to connect the Voltage pickup cable used to measure weld
voltage.
B CURRENT INPUT - 2 pin receptacle to connect either a Current Coil cable or a Current Shunt cable to
measure weld current.
C COIL/SHUNT SWITCH - Selects whether a Current Coil or a Shunt is used to measure welding current.
Depress button to select "IN" for Coil or "OUT" for Shunt.
D START SIGNAL - The Start Signal input is used with the optional model WSTC trigger cable.
E RS-232 SERIAL PORT - 25-pin, 'D" type connector is used to connect the Sentry's
RS232/RS422/RS485 communications interface to a serial printer or computer. Capabilities include
two-way communications and multiple Sentrys via daisy-chain or multiple I/O board.
F RELAY OUTPUT - for programmable solid state relays to activate external devices on Accept/Reject
decisions. Two DC relays are provided and 2 additional AC or DC relays can be added by the user.
Must be connected to user-supplied power source.
G CONTROL SIGNALS - 15-pin, "D" type connector is used for Remote Schedule selection.
H LINE MONITOR - 3/4" feedthrough access to connect a 115, 230, 360 or 480 VAC power line to
monitor the AC line voltage. Provided with a separate 3-wire cable which is wired to a terminal block
inside the Weld Sentry and terminated with a user-supplied plug.
I
CIRCUIT BREAKER - Rear panel reset button for 05 AMP circuit breaker.
J
POWER CABLE - 5 foot cable is terminated with the appropriate 115 or 230 volt NEMA plug.
Figure 2 - Rear Panel of Weld Sentry 2.
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