Technical data

Publication 1794-2.1 - January 2000
52 24V dc 4 Sink Input Module Cat. No. 1793-IB4 and -IB4S FLEX I/O and FLEX Integra Product Data
Setting Input Filter Times
(Standard Mode Addressing Only)
You can select the input filter time (FT) for channels 00 thru 03. Select
the input filter time by setting the corresponding bits in the output
image table (complementary word) for the module.
For example, to set a filter time of 2ms for an input module at address
rack 1, module group 0, set bits 02, 01, and 00 as shown below.
Input Filter Times
Bits Description Selected Filter
Time
02 01 00 Filter Time for Inputs 00-07
0 0 0 Filter Time 0 (default) 256µs
0 0 1 Filter Time 1 512µs
0 1 0 Filter Time 2 1ms
0 1 1 Filter Time 3 2ms
1 0 0 Filter Time 4 4ms
1 0 1 Filter Time 5 8ms
1 1 0 Filter Time 6 16ms
1 1 1 Filter Time 7 32ms
41335
O:010
Write Filter Time on system startup.
FLL
Fill File
Source 3
Destination #O:010
Length 1
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
011
Write Filter Time to complement of input module.
Dec.=3
Octal
or 3
Decimal
I:000
00
Specifications - 1793-IB4 and -IB4S
Number of Channels 1 group of 4, nonisolated
Module Location DIN-rail mounted
Module Type 4 digital input - sinking
1793-IB4 - screw-clamp terminations
1793-IB4S - spring-clamp terminations
ON-State Voltage 10-31.2V dc; 24V dc nominal
ON-State Current 2-12mA; 8mA @ 24V dc
OFF-State Voltage 5.0V dc maximum
OFF-State Current 1.5mA minimum
Channel Impedance 4.6K Ω
Dielectric Withstand Test Channel to system - 850V dc for 1s
Channel to channel - none
Maximum Input
Filter Times
OFF to ON
ON to OFF
256µs, 512µs, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms
256µs, 512µs, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms
256µs default - selectable thru output image table
(see
Setting Input Filter Times )
Flexbus Current 10mA maximum
Power Dissipation 1.5W @ 31.2V dc
Thermal Dissipation 5.1 BTU/hr @ 31.2V dc
Indicators 4 yellow channel status indicators
General Specifications
External dc Power
Voltage 19.2-31.2V dc (5% ac ripple)
Dimensions HxWxD 69mm x 55mm x 80mm
(2.72in x 2.17in x 3.15in)
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock Operating
Non-operating
Vibration
0 to 55
o
C (32 to 131
o
F)
-40 to 85
o
C (-40 to 185
o
F)
5 to 95% noncondensing
30g peak acceleration, 11(±1)ms pulse width
50g peak acceleration, 11(±1)ms pulse width
Tested 5g @ 10-500Hz per IEC 68-2-6
Conductors Wire Size
Category
12 gauge (4mm
2
) stranded maximum
3/64 inch (1.2mm) maximum insulation, 90C
minimum temperature rating
2
1
Terminal Screw Torque 4-7 inch-pounds
Publication
Installation Instructions 1793-5.1
Agency Certification
1 Use this conductor category information for planning conductor routing. Refer to
publication 1770-4.1, “Industrial Automation Wiring and Grounding Guidelines for Noise
Immunity.”