3.4.4 Maim Connector
The Alarm Connector provides status outputs and an EXTERNAL RESET
switch connection to customer-supplied controls. Connection is via a J971
cable from the 25-pin connector on the welder's rear panel. The cable is
available in 8 ft/2.5 m, 15 ft/4.5 m, or 25 ft/7.5 m lengths.
The EXTERNAL RESET switch operates in exactly the same manner as the
front panel RESET switch. Applying +24V DC to the EXTERNAL RESET
input (pin 25) for a minimum of 20 ms will reset the welder.
The status outputs available from the interface are SOLENOID OUTPUT
(pin 13), GENERAL ALARM (pin 18), READY (signal - pin 19, relay - pins 9
& 10), and WELD ON (pin 20). The SOLENOID OUTPUT provides a
negative logic output
when referenced to the +24V DC source (pins 5 &
6). GENERAL ALARM, READY & WELD ON signals provide a negative
logic output when reference to 24V RTN (pins 21, 22, and 23).
These signals can be interfaced with a customer-supplied device to
monitor system status and trigger some action when the signals become
active or inactive.
Pins 5 and 6 provide a +24V DC source (100 mA maximum). Pins 21, 22
and 23 provide +24V DC return (common). The remaining pins are
unused. (For further information, see Figure 3-6 "Input/Output Signals.")
9001W+
3-7
Installation
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