Filter
Top Products
NXC-VAI4 Analog Voltage Control Card
26
NetLinx Cardframe, Control Cards, and NetModules - Operation Reference Guide
Pinouts and Functions
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 Specifications (Cont.)
I/O Status LEDs 1-8:
(two LEDs per channel)
Note: LEDs light to indicate
ON status.
• 4 yellow LED's (one per channel) light to indicate input signal changes reported to the
Master.
• 4 red LED's (one per channel) light to indicate output signal changes.
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.
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
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.