Technical data

Publication 1794-2.1 - January 2000
70 24V dc 16 Source Input Module Cat. No. 1794-IV16 FLEX I/O and FLEX Integra Product Data
Setting the Input Filter Time
You can select the input filter time (FT) for all channels (channels 00
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 of 8ms for a dc input module at
address rack 1, module group 0, set bits 10, 09 and 08 as shown
below.
Input Filter Times
(Standard Addressing Mode Only)
Derating Curve
Bits Description Selected
Filter Time
10 09 08 Filter Time for Inputs 00-15(00-17)
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-IV16
Number of Inputs 16 (1 group of 16), non-isolated, sourcing
Module Location Cat. No. 1794-TB2, -TB3, or -TB3S
Terminal Base Unit
ON-State Voltage 10V dc minimum;
24V dc nominal;
31.2V dc maximum
ON-State Current 2.0mA minimum;
8.0mA nominal at 24V dc;
11.0mA maximum
OFF-State Voltage 5.0V dc maximum
OFF-State Current 1.5mA minimum
Input Impedance 4.7K Ω maximum
Isolation Voltage 100% tested at 2121V dc for 1s between user and
system
No isolation between individual channels
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
Power Dissipation Maximum 5.7W @ 31.2V dc
Thermal Dissipation Maximum 19.4 BTU/hr @ 31.2V dc
Indicators (field side
indication, customer
device driven)
16 yellow status indicators
40157
O:010
Write Filter Time on system startup.
FLL
Fill File
Source 1280
Destination #O:010
Length 1
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Write FT to complement of input module.
101
Dec.
=2400
Octal
or 1280
Decimal
FT for channels 00 thru 15
I:000
00
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)
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 1794-5.28
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