Technical data

Publication 1794-2.1 - January 2000
68 24V dc 16 Sink Input Module Cat. No. 1794-IB16 FLEX I/O and FLEX Integra Product Data
Setting Input Filter Times
You can select the input filter time for each group of channels
(channels 00 through 11, or channels 12 through 15). 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 constant of 4ms for a dc input module
at address rack 1, module group 0, set bits 05, 04, 03, 02, 01, and 00 as
shown below.
Input Filter Times
(Standard Addressing Mode Only)
Derating Curve
Bits Description Maximum
Filter Time
02 01 00 Filter Times 00-11 (00-13)
05 04 03 Filter Times 12-15 (14-17)
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
Specifications - 1794-IB16
Number of Inputs 16 (1 group of 16), non-isolated, sinking
Module Location Cat. No. 1794-TB3 or -TB3S Terminal Base
ON-State Voltage 10V dc minimum;
24V dc nominal;
31.2V dc maximum
Mounting Refer to derating curve
ON-State Current 2.0mA minimum;
8.0mA nominal at 24V dc;
12.0mA maximum
OFF-State Voltage 5.0V dc maximum
OFF-State Current 1.5mA minimum
Input Impedance 4.6K Ω maximum
Isolation Voltage 100% tested at 850V dc for 1s between user and
system
No isolation between individual channels
Max Input Filter Times
OFF to ON
ON to OFF
256µs, 512µs, 1ms, 2ms, 4ms, 8ms, 16ms, and 32ms
256µs, 512µs, 1ms, 2ms, 4ms, 8ms, 16ms, and 32ms
256µs default - selectable thru output image table
(see
Setting Input Filter Times )
Flexbus Current (max) 30mA @ 5V dc
Power Dissipation Maximum 6.1W @ 31.2V dc
Thermal Dissipation Maximum 20.8 BTU/hr @ 31.2V dc
40154
FT = 12-15
Dec.
(Octal)
O:010
Write Filter Time on system startup.
FLL
Fill File
Source 36
Destination #O:010
Length 1
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
10 0100
FT = 00-11
Write Filter Time Constant to complement of input module.
=44 Octal
or 36
Decimal
Indicators (field side
indication, customer
device driven)
16 yellow status indicators
Keyswitch Position 2
General Specifications
External dc Power
Supply Voltage
Voltage Range
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
Refer to derating curve
Dimensions HxWxD 46mm x 94mm x 53mm (1.8in x 3.7in x 2.1in)
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) insulation maximum
2
1
Publication
Installation Instructions 1794-5.4
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.”
Voltage (max) Temperature (max)
Normal Other
Voltage (max) Temperature (max)
Normal Other
31.2 37 32 29.0 51 45
30.5 41 36 28.5
55
48
30.0 45 39 28.0 51
29.5 48 42 27.5 55
Class I Division 2 certified
Groups A, B, C, D certified
Class I Zone 2 Group IIC certified
40220
31.2
30
25
20
15
10
0102030
40
50 6055
V
in
O
n-state
Voltage
(V dc)
Ambient Temperature
o
C
The area within the curve represents the safe operating range for the module under v
a
conditions of user supplied 24V dc supply voltages and ambient temperatures.
= Normal mounting safe operating range,
included
= Other mounting positions (including inverted horizontal) safe
operating range)
28.5
27.5
3732
Normal Mounting - Horizontal
Other Mounting (including Vertical and Inverted Horizontal Mounting)
40221