OPTO 22 – SNAP-AOVA-8 _ SNAP 8-ch analog multifunction output, voltage or current
OPTO 22 – SNAP-AOVA-8 _ SNAP 8-ch analog multifunction output, voltage or current
Quick Specs:
- SNAP 8-ch analog multifunction output
- voltage or current
The SNAP-AOVA-8 analog output module has 8 channels, each individually configurable for any one of six voltage or current output ranges.
Voltage:
0 to 5 VDC
0 to 10 VDC
-5 to +5 VDC
-10 to +10 VDC
Current:
4 to 20 mA
0 to 20 mA
The SNAP-AOVA-8 requires a 24 VDC excitation voltage brought in through the field connector on the top of the module. This voltage is internally isolated with transformer and digital data isolators, and then used to source all channels.
Because all current is sourced from within the module using the 24 VDC excitation, current outputs cannot be used with an external loop supply. Current outputs are self-sourcing and cannot be used in loops that are loop-powered or already have a self-sourcing device in the loop.
The SNAP-AOVA-8 mounts on a SNAP PAC rack alongside other I/O modules (digital, analog, and serial). This module requires a SNAP PAC brain or rack-mounted controller with firmware version R9.4b or higher. It cannot be used with legacy controllers or brains.
To wire the module, a 6-foot-long SNAP-HD-20F6 cable is required. The cable has a 20-pin connector at the module end and flying leads for wiring to field devices.
Specifications:
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Excitation Range |
18 TO 32 VDC |
|
Excitation Current Required |
200mA @ 32VDC, 250mA @ 24VDC, 350mA @ 18VDC |
|
24V Excitation Fault Recovery Time |
15 mS nominal |
|
Power Requirement (from the rack) |
5 VDC (±0.15) @ 150 mA |
|
Maximum Operating Common Mode Voltage |
250 volts |
|
Isolation |
1500 V (transient) |
|
DC Common Mode Rejection |
>-120 dB |
|
AC Common Mode Rejection |
>-120 dB @ 60 Hz |
|
Data Refresh Time |
9 mS nom (update 1 ch/ms) |
|
Ambient Temperature: |
-20 to 70 °C |
|
Humidity |
5-95%, non-condensing |
|
Torque, hold-down screws |
4 in-lb (0.45 N-m) |
|
Torque, connector screws |
5.26 in-lb (0.6 N-m) |
|
Wire size range |
22 to 14 AWG |
|
Agency Approvals |
UL, CE, RoHS, DFARS; UKCA |
|
Warranty |
Lifetime |
|
Voltage Outputs |
|
|
Output Range (Resolution) |
0 to 5 VDC (1.22 mV) |
|
Load Current |
+/-10 mA min. each voltage output channel) |
|
Short Circuit Current |
16 mA Typ. |
|
Accuracy |
0.1% of span |
|
Drift: |
30 PPM / °C |
|
Current Outputs |
|
|
Output Range (Resolution) |
4 to 20 mA (4 microamps) |
|
Maximum Loop Resistance |
750 Ohms (each current output channel ) |
|
Open Circuit Volts |
27 VDC max. |
|
Accuracy |
0.1% of span |
|
Drift: |
30 PPM / °C |
