AMX nxc Channel Assignments, NXC-VAI4 Pinouts, Signals, and Functions, Channel State Function

NXC-VAI4 Analog Voltage Control Card

NXC-VAI4 Specifications (Cont.)

I/O Status LEDs 1-8:	• 4 yellow LED's (one per channel) light to indicate input signal changes reported to the
(two LEDs per channel)	Master.
Note: LEDs light to indicate	• 4 red LED's (one per channel) light to indicate output signal changes.
ON status.	LED 1: Output #1 (red)
	LED 2: Input #1 (yellow)
	LED 3: Output #2 (red)
	LED 4: Input #2 (yellow)
	LED 5: Output #3 (red)
	LED 6: Input #3 (yellow)
	LED 7: Output #4 (red)
	LED 8: Input #4 (yellow)
	The card is shipped in "factory-default" mode (i.e. the levels have not been configured
	for each channel). The Output (red) LEDs blink in sequence to indicate that the power-
	up or limit levels have not been set. The Output LED for each channel will continue to
	blink until the channel has been calibrated.
Wiring	Captive-wire connectors.

Pinouts and Functions

NXC-VAI4 Pinouts, Signals, and Functions

Pin	Function	Pin	Function
1	Output #1 (GND)	9	Input #1 (GND)
2	Output #1	10	Input #1
3	Output #2 (GND)	11	Input #2 (GND)
4	Output #2	12	Input #2
5	Output #3 (GND)	13	Input #3 (GND)
6	Output #3	14	Input #3
7	Output #4 (GND)	15	Input #4 (GND)
8	Output #4	16	Input #4
		17	+5 V Reference output (GND)
		18	+5 V Reference output
		19	External Reference input (GND)
		20	External Reference input

Channel Assignments

The channel ON/OFF assignments for the NXC-VAI4 are described in the following table.

Off = 50% voltage, and all channel assignments are mutually exclusive.

NXC-VAI4 Channel Assignments

Channel	State	Function
1	ON	While channel 1 is ON, the voltage on Output 1 will ramp up at the "CURRENT OUTPUT 1
		RAMP UP TIME" rate. The voltage ramp stops if the maximum is reached.
	OFF	Stops voltage ramping on Output 1 at current value.
2	ON	While channel 2 is ON, the voltage on Output 2 will ramp up at the "CURRENT OUTPUT 2
		RAMP UP TIME" rate. The voltage ramp stops if the maximum is reached.
	OFF	Stops voltage ramping on Output 2 at current value.
3	ON	While channel 3 is ON, the voltage on Output 3 will ramp up at the "CURRENT OUTPUT 3
		RAMP UP TIME" rate. The voltage ramp stops if the maximum is reached.
	OFF	Stops voltage ramping on Output 3 at current value.

26 NetLinx Cardframe, Control Cards, and NetModules - Operation Reference Guide