Technical data

Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data
220V ac 8 Input Module Cat. No. 1794-IM8 45
Increasing the Input Filter Time
You can increase the filter delay time (FT) for channels 00 through 07.
Select the input filter time by setting the corresponding bits in the output
image table (complementary word) for the module.
For example, to increase the off-to-on filter time to 12ms for an ac input
module at address rack 1, module group 0, set bits 02, 01, and 00 as shown
below.
Input Filter Times
Derating Curve
Bits Description Maximum Filter Time
02 01 00 Filter Time for
Inputs 00-07
Off to On On to Off
0 0 0 Filter Time 0
(default)
7.5ms 26.5ms
0 0 1 Filter Time 1 8ms 27ms
0 1 0 Filter Time 2 9ms 28ms
0 1 1 Filter Time 3 10ms 29ms
1 0 0 Filter Time 4 12ms 31ms
1 0 1 Filter Time 5 16ms 35ms
1 1 0 Filter Time 6 24.5ms 44ms
1 1 1 Filter Time 7 42ms 60.5ms
Specifications - 1794-IM8
Number of Inputs 8 (1 group of 8), non-isolated
Module Location Cat. No. 1794-TBN Terminal Base Unit
Module Mounting See derating curve
ON-State Voltage 159V ac minimum
ON-State Minimum
Current Normal
Maximum
5.27mA @ 159V ac, 47Hz
9.88mA @ 220V ac, 60Hz
13.21mA @ 264V ac, 63Hz
OFF-State Voltage 40V ac maximum
Max OFF-State Current 2.6mA
Nominal Input Impedance 22.3K Ω
Nominal Input Current 10mA @ 220V ac, 60Hz
Isolation
Channel to Channel
Customer Power to
Input Channels
User to System
None required
None
100% tested at 2600V dc for 1s
O:010
FT = 00-07
Dec. (Octal)
=3 Octal or
3 Decimal
Write Filter Time on system startup.
FLL
Fill File
Source 3
Destination #O:010
Length 1
Write FT to
complement
of input
module.
I:000
00
40103
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
100100
Maximum Input
Filter Time
OFF to ON
(time from a valid input
signal to recognition
by block)
ON to OFF
(time from input
dropping below valid
level to recognition
by block)
7.5ms, 8ms, 9ms, 10ms,12ms, 16ms, 24.5ms, and
42ms
26.5ms, 27ms, 28ms, 29ms, 31ms, 35ms, 44ms,
and 60.5ms
Filter time selectable thru output image table
Default is 7.5ms off to on/26.5 on to off
Flexbus Current (max) 30mA @ 5V dc
Power Dissipation Maximum 4.7W @ 264V ac
Thermal Dissipation Maximum 16.2 BTU/hr @ 264V ac
Indicators (field side
indication, customer
device driven)
8 yellow status indicators
Keyswitch Position 8
General Specifications
External ac Power
Supply Voltage
Voltage Range
220V ac nominal
159 to 264V ac, 47-63Hz (see 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
1
1
Publication
Installation Instructions 1794-5.57
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 (maximum) Temperature (maximum)
264
46
o
C
250
55
o
C
Class I Division 2 certified
Groups A, B, C, D certified
Class I Zone 2 Group IIC certified
264
250
235
220
205
190
175
150
010 2030 40
46
50 55 60
V
in
On-State
Voltage
(V ac)
Ambient Temperature
o
C
The area within the curve represents the safe operating range for the module under
various conditions of user supplied 220V ac supply voltages and ambient
temperatures.
= All mounting positions (including normal horizontal, vertical,
inverted horizontal) safe operating range.
41269