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MicroLogix™ 1000 Programmable Controllers
Publication 1761-IN001C-EN-P - March 2008
AC/DC Input Specifications for 1761-L16NWA and 1761-L16NWB
Analog Input Specifications
On Current
5.0 mA min. at 79V ac 47 Hz
12.0 mA nominal at 120V ac 60 Hz
16.0 mA max. at 132V ac 63 Hz
2.5 mA min. at 14V dc
8.0 mA nominal at 24V dc
12.0 mA max. at 30V dc
Off Current
2.5 mA max.
1.5 mA max.
Nominal Impedance
12K ohms at 50 Hz
10K ohms at 60 Hz
3K ohms
Inrush Maximum
250 mA max.
(1)
Not Applicable
(1)
To reduce the inrush maximum to 35 mA, apply a 6.8K ohm, 5W resistor in series with the input. The on-state voltage
increases to 92V ac as a result
Specification
(1)
(1)
Input circuits may be operated ac or dc on a group basis only.
AC Excitation
(2)
(2)
All ac specifications are sinusoidal RMS values.
DC Excitation
On State Voltage
Minimum
18V ac
14V dc
Nominal
24V ac
24V dc
Maximum
26.4V ac at 55°C (131°F)
30V ac at 30°C (86°F)
26.4V dc at 55°C (131°F)
30V dc at 30°C (86°F)
On State Current
Minimum
3.0 mA at 18V ac
2.5 mA at 14V dc
Nominal
8.0 mA at 24V ac
8.0 mA at 24V dc
Maximum
12 mA at 30V ac
12 mA at 30V dc
Off State Voltage
Minimum
0.0V ac
0.0V dc
Maximum
3.0V ac
5.0V dc
Off State Current
Minimum
1.0 mA
1.5 mA
Frequency
Nominal
50/60 Hz
see Turn On Time/Turn Off Time
Range
47 to 63 Hz
Turn On Time
(3)
(3)
Turn On and Turn Off Times are not adjustable.
Minimum
2 ms
2 ms
Maximum
20 ms
20 ms
Turn Off Time
(3)
Minimum
10 ms
10 ms
Maximum
20 ms
20 ms
Description
Specification
Voltage Input Range
-10.5 to +10.5V dc - 1LSB
Current Input Range
-21 to +21 mA - 1LSB
Type of Data
16-bit signed integer
Input Coding -21 to +21 mA - 1LSB, -10.5 to +10.5V dc - 1 LSB
-32,768 to +32,767
Description
Specification
100-120V ac Controllers
24V dc Controllers
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