Technical data

Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data
12/24V dc 4 Input Pulse Counter Module Cat. No. 1794-IP4 147
Specifications - 1794-IP4
Number of Inputs 4 frequency counter interfaces - 2 inputs each
Counting Frequency 100KHz maximum. Each signal condition must be
stable for at least 2µs to be recognized.
Input Range
Input ON
Input OFF
Maximum 26.4V dc (24V dc +10%)
Minimum 6V dc
Maximum 3V dc
Minimum - 26.4V dc
Input Current (Typical) 3mA @ 6V dc
9mA @ 12V dc
15mA @ 24V dc
Module Location Cat. No. 1794-TB3, -TB3S, -TBN, and -TBNF
Terminal Base Units
Flexbus Current 5mA @ 5V dc
Power Supply (External) 12-24V dc (+
10%)
Current Consumption from
External Power Supply
150mA @ 12V dc
75mA @ 24V dc
Power Dissipation 5W maximum @ 26.4V dc
Thermal Dissipation Maximum 17.1 BTU/hr @ 26.4V dc
Indicators (field side driven,
logic side indication)
1 green/red power/status indicator
8 yellow status indicators - logic side
Keyswitch Position 1
Data Format Period read in 1µs counts with 1MHz internal clock
selected; 0.1µs counts when 10MHz internal clock
selected
Overflow Maximum period is 65ms when 1MHz internal
clock selected; Maximum period = 6.5ms when
10MHz internal clock selected
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
Nonoperating
Vibration
0 to 55
o
C (32 to 131
o
F) Note: Do not connect
maximum input voltage simultaneously to all
inputs if the module ambient temperature is
expected to exceed 40
o
C (104
o
F).
-40 to 85
o
C (-40 to 185
o
F)
5 to 90% noncondensing (operating)
5 to 80% noncondensing (non-operating)
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
Input Conductors
Wire
Category
Length (Maximum)
Belden 8761
2
1
1000ft (304.8m)
Publications
Installation Instructions
User Manual
1794-5.64
1794-6.5.16
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.”