Input Terminal Signal Test - GE AF-650 GP Operating Instructions Manual

6.3.13 Input Terminal Signal Test

The presence of signals on either the digital or analog input terminals of the drive can be verified on the drive display. Digital or analog input status can be selected
in the display using the [DISPLAY MODE] key and the [+] and [-] keys on the keypad.
Digital inputs
With digital inputs displayed, control terminals 18, 19, 27, 29, 32, 33 are shown left to right, with a 1 indicating the presence of a signal.
If the desired signal is not present in the display, the problem may be either in the external control wiring to the drive or a faulty control card. To determine the
fault location, use a volt meter to test for voltage at the control terminals.
Verify the control voltage power supply is correct as follows.
1. With a voltmeter measure voltage at control card terminal 12 and 13 with respect to terminal 20. Meter should read between 21 and 27 VDC.
If the 24 V supply voltage is not present, conduct the Control Card Test (6.3.17) later in this section.
If the 24 V is present proceed with checking the individual inputs as follows
2. Connect (-) negative meter lead to reference terminal 20.
3. Connect (+) positive meter lead to terminals 18, 19, 27, 29, 32, and 33 in turn.
Presence of a signal at the desired terminal should correspond to the digital input display reading. A reading of 24 VDC indicates the presence of a signal. A reading
of 0 VDC indicates no signal is present.
Analog inputs
The value of signals on analog input terminals 53, 54, and 60 can also be displayed.
The voltage on terminals 53 and 54, or the current in milliamps for terminal 60 is shown in line 2 of the display.
If the desired signal is not present in the display, the problem may be either in the external control wiring to the drive or a faulty control card. To determine the
fault location, use a volt meter to test for a signal at the control terminals.
High Power Service Manual for Unit Sizes 6x
6
91