| SNAP-IAC-16 SNAP isolated 16-pt digital input module, 90-140 VAC/VDC | 
      |  
counting and latching.
For field wiring, use the SNAP-HD-ACF6 wiring harness assembly with flying leads.
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted
controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-
based control or for use as intelligent remote I/O for an Allen-Bradley MicroLogix or other RSLogix-based PLC system,
such as ControlLogix or CompactLogix.
The SNAP-IAC-16 cannot be used with legacy brains.
| SNAP-IDC-16 | SNAP-IDC-HT-16 | SNAP-IAC-16 | SNAP-IAC-A-16 | SNAP-IAC-K-16 | |
| Input Range | 10–32 VDC/VAC | 15–28 VDC/VAC | 90–140 VAC/VDC | 180–280 VAC/VDC | 70–130 VAC/VDC | 
| Nominal Voltage  Range  |  24 VDC | 24 VDC | 120 VAC | 240 VAC | 100 VAC | 
| Input Resistance | 44 K ohms | 4 K ohms | 300 K ohms | 940 K ohms | 220 K ohms | 
| Logic Voltage and  Current  |   5 VDC ± 0.1 @  150 mA  |   5 VDC ± 0.1 @  150 mA  |   5 VDC ± 0.1 @  150 mA  |   5 VDC ± 0.1 @  150 mA  |   5 VDC ± 0.1 @  150 mA  |  
| Input  Arrangement  |   16 isolated input  channels  |   16 isolated input  channels  |   16 isolated input  channels  |   16 isolated input  channels  |   16 isolated input  channels  |  
| Channel-to-  Channel Isolation  |   250 V steady-  state, 1500 V transient  |   250 V steady-  state, 1500 V transient  |   250 V steady-  state, 1500 V transient  |   250 V steady-  state, 1500 V transient  |   250 V steady-  state, 1500 V transient  |  
| Maximum  Number of HDD Modules on One Mounting Rack  |  16 | 16 | 16 | 16 | 16 | 
| Indicators |  None; use  optional OptoTerminal-G20 diagnostic display.  |   None; use  optional OptoTerminal-G20 diagnostic display.  |   None; use  optional OptoTerminal-G20 diagnostic display.  |   None; use  optional OptoTerminal-G20 diagnostic display.  |   None; use  optional OptoTerminal-G20 diagnostic display.  |  
| ON Voltage |  10 VDC @  0.230 mA  |   15 VDC @  3.50 mA  |   90 VAC/VDC @  0.3 mA  |   180 VAC/VDC @  0.191 mA  |   70 VAC/VDC @  0.3 mA  |  
| OFF Voltage |  3 VDC @  0.05 mA  |  9 VDC @ 2.0 mA |  40 VAC/VDC @  0.135 mA  |   40 VAC/VDC @  0.043 mA  |   30 VAC/VDC @  0.135 mA  |  
| Torque, hold-  down screws  |  4 in-lb (0.45 N-m) | 4 in-lb (0.45 N-m) | 4 in-lb (0.45 N-m) | 4 in-lb (0.45 N-m) | 4 in-lb (0.45 N-m) | 
| Torque,  connector screws  |  5.26 in-lb (0.6 N-m) | 5.26 in-lb (0.6 N-m) | 5.26 in-lb (0.6 N-m) | 5.26 in-lb (0.6 N-m) | 5.26 in-lb (0.6 N-m) | 
| Polling time from  I/O processor to module1  |  2–30 ms typical2 | 2–30 ms typical2 | 2–30 ms typical2 | 2–30 ms typical2 | 2–30 ms typical2 | 
| Input Turn-On/Off  Time  |   15 ms turn-on  time 20 ms turn-off time  |   15 ms turn-on  time 20 ms turn-off time  |   15 ms turn-on  time 20 ms turn-off time  |   15 ms turn-on  time 20 ms turn-off time  |   15 ms turn-on  time 20 ms turn-off time  |  
| Counting Frequency  (DC input)  |   0–25 Hz @ 50%  duty cycle  |   0–15 Hz @ 50%  duty cycle  |   0–25 Hz @ 50%  duty cycle  |   0–25 Hz @ 50%  duty cycle  |   0–25 Hz @ 50%  duty cycle  |  
| Agency Approvals |  UL, CE, RoHS,  DFARS  |   UL, CE, RoHS,  DFARS  |   UL, CE, RoHS,  DFARS  |   UL, CE, RoHS,  DFARS  |   UL, CE, RoHS,  DFARS  |  
| Warranty | Lifetime | Lifetime | Lifetime | Lifetime | Lifetime | 
|  1 Affects turn-on and turn-off determination  2 Time varies based on the SNAP PAC I/O processor (brain or on-the-rack controller), processor configuration, and Ethernet host communication activity.  |  |||||
 
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