ControlLogix AC (79-132V) Diagnostic Module
13
Publication 1756-5.5 - September 1999
1756-IA8D Specifications
Number of Inputs
8 (4 points/common)
Module Location
1756 ControlLogix Chassis
Backplane Current
100mA @ 5.1V dc & 3mA @ 24V dc
(Total backplane power 0.58W)
Maximum Power Dissipation (Module)
4.5W @ 60
o
C
Thermal Dissipation
15.35 BTU/hr
On-State Voltage Range
79-132V ac, 47-63Hz
Nominal Input Voltage
120V ac
On-State Current
74V @ 5mA ac, 47-63Hz minimum
16mA @ 132V ac, 47-63Hz maximum
Maximum Off-State Voltage
20V
Maximum Off-State Current
2.5mA
Maximum Input Impedance @ 132V ac
8.25k
Ω
@ 60Hz
Input Delay Time
Off to on
Hardware Delay
On to Off
Hardware Delay
Programmable filter: 1ms & 2ms
10ms maximum plus filter time
Programmable filter: 9ms & 18ms
8ms maximum plus filter time
Diagnostic Functions
Open Wire
Loss of Power
Time Stamp of Diagnostics
Change of State
Time stamp of Inputs
Off state leakage current 1.5mA minimum
Transition range 46 to 85V ac
+/- 1ms
Software configurable
+/- 200µs
Short/Inrush Current
250mA peak (decaying to <37% in 22ms, without activation)
Cyclic Update Time
User Selectable (200µs minimum/750ms maximum)
Isolation Voltage
Group to group
User to system
100% tested at 2546V dc for 1s
(250V ac maximum continuous voltage between groups)
100% tested at 2546V dc for 1s
RTB Screw Torque (NEMA)
7-9 inch-pounds (0.8-1Nm)
Module Keying (Backplane)
Software configurable
RTB Keying
User defined mechanical keying
Field Wiring Arm and Housing
20 Position RTB (1756-TBNH or TBSH)
1
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
0 to 60°C (32 to 140°F)
-40 to 85°C (-40 to 185°F)
5 to 95% noncondensing
Conductors
Wire Size
Category
22-14 gauge (2mm
2
) stranded
1
3/64 inch (1.2mm) insulation maximum
1
2, 3
Screwdriver Width for RTB
5/16 inch (8mm) maximum
Allen-Bradley Drives