ac/dc (120V) Isolated Input Module
13
Publication 1771-IN070B-EN-P - August 2002
Inputs per Module1
16
Module Location
1771ĆA1B thru ĆA4B or later I/O chassis
1771-AM1, -AM2 Chassis
Input Voltage Range
74-138V ac, 47-63Hz; 105-138V dc
Nominal Input Voltage
120V ac/dc
Nominal Input Current
120V ac: 12.4mA @ 50Hz; 14.9mA @ 60Hz
120V dc: 2.5mA
On-state Voltage (minimum)
74V ac; 105V dc
On-state Current (minimum)
6.0mA @ 74V ac, 47-63Hz
1.2mA @ 105V dc
Off-state Voltage (maximum)
45V ac; 66V dc
Off-state Current (minimum)
4.0mA @ 45V ac, 47-63Hz; 0.8mA @ 66V dc
Input Signal Delay
Off to On
On to Off
0.57ms for ac; 0.57ms for dc
Selectable: 9ms or 18.0ms for ac; Fixed; 9ms for dc
Input Impedance (minimum)
ac: 9.3K ohms @ 47Hz; 6.9K ohms @ 63Hz
dc: 75K ohms off; 48K ohms on
Power Dissipation
7.0 Watts (max.), 0.3 Watts (min.)
Thermal Dissipation
23.8 BTU/hr (max.), 1.0 BTU/hr (min.)
Backplane Current
75mA maximum
Isolation Voltage
Tested to 1500V ac channelĆtoĆchannel for 1s; 1500V ac channel to backplane
for 1s
Maximum Cable Length
1000ft (304.8m)
Conductors Wire Size
Category
Only 14 to 22 gauge (2.5mm
2
to 0.25mm
2
) stranded or solid copper rated at
60
o
or greater
1. 2
3/64 inch (1.2mm) insulation maximum
1
3
Environmental Conditions
Operating
Temperature
IEC 60068-2-1 (Test Ad, Operating Cold)
IEC 60068-2-2 (Test Bd, Operating Dry Heat)
IEC 60068-2-14 (Test Nb, Operating Thermal Shock)
32 to 140
°
F (0
o
to 60
o
C)
Storage Temperature
IEC 60068-2-1 (Test Ab, Unpackaged, Nonoperating Cold)
IEC 60068-2-2 (Test Bb, Unpackaged, Nonoperating Dry Heat)
IEC 60068-2-14 (Test Na, Unpackaged, Nonoperating Thermal Shock)
-40 to 185
°
F (-40 to 85
o
C)
Relative Humidity
IEC 60068-2-30 (Test Db, Unpackaged, Nonoperating Damp Heat)
5 to 95%, noncondensing
Shock
Operating
Nonoperating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
30g
50g
Vibration
IEC 60068-2-6 (Test Fc, Operating)
2g @ 10-500Hz
ESD Immunity
IEC 61000-4-2
4kV contact discharges
Radiated RF Immunity
IEC 61000-4-3
10V/m with 1kHz sine-wave 80% AM from 30MHz to 1000MHz
10V/m with 200Hz 50% pulse 100% AMat 900MHz
