Installation and Configuration
User Signals
User Signals
Connector Auxiliary connector J21, located on the RS-232 interface rear panel, provides J21 User several signals to increase your operating control of the supply. These signals are
Signals dependent on the operator's design and uses. The operation of the J21 signal requires that you provide external Vcc and ground. Use a standard 8-position telephone jack and data cable to connect to J21. To locate the connector, refer to the RS-232 interface subplate drawing in Figure 2.2, on page 21. See Figure 2.5 for pin descriptions. The J21 outputs can sink a current of 5mA each. Figure 2.6, on page 31 shows the portion of the option board schematic which contains the J21 connector. Use the schematic as a reference when making input or output connections.
J21-1 External TTL shutdown input signal (See “TTL Shutdown”)
J21-2 Polarity signal, open collector (asserted by VSET -x)
J21-3 Isolation signal, open collector (asserted by OUT OFF)
J21-4 Fault signal, open collector | |
(asserted when bit set in fault register) | J21 |
|
J21-5 External Vcc, 15V maximum
(supplied by connecting and operating an external source)
J21-6 External ground and shutdown return
(supplied by connecting and operating an external source)
J21-7 Open collector user signal (asserted by AUXA ON)
J21-8 Open collector user signal (asserted by AUXB ON)
Figure 2.5 User Signals J21 Connector
