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ControlLogix Config Flowmeter Module

Catalog #: 1756-CFM

Lifecycle status: Active

Suitable for safety functions	False
Digital inputs configurable	True
Digital outputs configurable	False
Voltage type of supply voltage	DC
Type of electric connection	Screw connection
Total backplane power	1.7 W
Thermal dissipation	20.4 btu/h
Current draw	300mA @ 5.1V, 16mA @ 24V
Module keying	Electronic, software configurable
Outputs	2 current sourcing
Power dissipation, max	6 W @ 60 °C (140 °F)
Inputs	Two flowm (F) inputs used for all modes, Two gate inputs used in Totalizer mode for prover/store count, 4 (2 per channel)
Isolation voltage	250V (continuous), reinforced insulation type, I/O-to-backplane, 250V (continuous), basic insulation type, I/O group-to-group
Wire category	2 on signal ports, 1 on power ports
Redundancy	False
Short-circuit protection, outputs available	False
High resolution, max	100 khz
Frequency	Resolution: 0.0005 Hz

Slot width	1 None
RTB keying	User-defined mechanical
Shock	Operating: 30 G, Non operating: 50 G
Vibration	2 G @ 10...500 Hz

Surrounding air temperature, max	60 °C
North American temperature code	T4
Emissions	IEC 61000-6-4
ESD immunity	6 kV contact discharges, 8 kV air discharges
Relative humidity	5...95% noncondensing
Conducted RF immunity	10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports
EFT/B immunity	±4kV @ 5kHz on unshielded output and power ports, ±4kV @ 5kHz on shielded input ports
Operating temperature	0 to 60 °C
Surge transient immunity	±1 kV line-line (DM) and ±2 kV line-earth (CM) on unshielded output and power ports, ±2 kV line-earth (CM) on shielded input ports
Radiated RF immunity	10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
Nonoperating temperature	-40 °C

On-state voltage drop, max	0.6 Ω x current
Off-state leakage current, max	<300 µA @ 31.2V DC
Reverse polarity protection	Outputs only
Output switching time	<50 µs turn on, <300 µs turn off, Outputs triggered by Total, all other “turn-on” and “turn-off” times <1 ms
Output control	Any number of outputs is assignable to any of two flowm channels each output can have 2 “turn-on” and “turn-off” preset values
Output type	IEC 1 A 24V DC
Output voltage source	Customer supplied
Overload current	Electronic (<4 A)
Surge current	2 A @ 50 ms, repeatable every 2s
Output current per point	1 @ 10...31.2V DC @ 20mA @ 4.5...5.5V DC
Output reverse polarity protection	Yes (if wired incorrectly, module outputs can be permanently disabled.)
Output short circuit protection	Electronic (no indication of fault. remove overload and toggle output on/off to restore.)
Output voltage range, nom	5V ops: 4.5...5.5V DC @ 3...20mA load per point, 12/24V ops: 10...31.2V DC @ 40mA...1 A load per point

Input frequency, max	100 kHz @ flowm inputs (overrange occurs at 100 kHz)
Gate input on-state current, min	4 mA
Gate input on-state current, nom	15 mA
Input sampling period	User selectable
Count range, max	2, 147, 483, 647
Flowmeter input impedance	5 kΩ ±30% resistive
Mechanical filter debouncing (Z0 & Z1 Inputs)	Software selectable
Gate input voltage range	5V ops: 4.5...5.5V DC @ 12/24V ops: 10...26.4V DC
Filtering (inputs F0 & F1)	Firmware selectable: high-speed 100 kHz or low-pass filter for frequencies <70 Hz
Flowmeter input voltage	±30V, selectable input thresholds of 50mV @ 1.3V and 4V: ±30V peak unterminated open circuit voltage, magnetic pickup, TTL compatible, input voltage >1.3V DC is Logic 1 and -0.7...1.3V DC is Logic 0, 12...24V DC powered preA output, 4V DC threshold

Totalizer fill and prover	True
Enclosure type	None (open-style)

Sales Info

Repairable	REPAIRABLE
Preferred Availability	true
Quick Turnaround	false
Dimension Height	5.715
Lead Time	5
Dimension Width	18.415
Dimension Length	23.495
Stock Status	STOCKED
Weight	0.354
Weight Unit	KG
Dimension Unit	CM

Available Downloads

EDS files for 1756-CFM (multi)
EDS files for ControlLogix Family (multi)
Firmware for 1756-CFM v3.011
AOP for 1756-CFM v40.10.00
AOP - Add On Profiles for 1756-CFM v40.10.06
AOP - Add On Profiles for 1756-CFM v40.10.07

See All Downloads

Drawings
Product Drawing	Drawing (DWG)
Product Drawing	Drawing (DWG)
Product Drawing	Drawing (DWG)

Drawings
Product Drawing Drawing (DWG)
Product Drawing Drawing (DWG)
Product Drawing Drawing (DWG)

Type	Resource	Publication
General	Technical Detail	--
General	Product Cutsheet	--
General	Selection Guide	1756-SG001
Technical Data	1756-td002_-en-e	1756-TD002

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Technical Specifications

Suitable for safety functions	False
Digital inputs configurable	True
Digital outputs configurable	False
Voltage type of supply voltage	DC
Type of electric connection	Screw connection
Total backplane power	1.7 W
Thermal dissipation	20.4 btu/h
Current draw	300mA @ 5.1V, 16mA @ 24V
Module keying	Electronic, software configurable
Outputs	2 current sourcing
Power dissipation, max	6 W @ 60 °C (140 °F)
Inputs	Two flowm (F) inputs used for all modes, Two gate inputs used in Totalizer mode for prover/store count, 4 (2 per channel)
Isolation voltage	250V (continuous), reinforced insulation type, I/O-to-backplane, 250V (continuous), basic insulation type, I/O group-to-group
Wire category	2 on signal ports, 1 on power ports
Redundancy	False
Short-circuit protection, outputs available	False
High resolution, max	100 khz
Frequency	Resolution: 0.0005 Hz

Slot width	1 None
RTB keying	User-defined mechanical
Shock	Operating: 30 G, Non operating: 50 G
Vibration	2 G @ 10...500 Hz

Surrounding air temperature, max	60 °C
North American temperature code	T4
Emissions	IEC 61000-6-4
ESD immunity	6 kV contact discharges, 8 kV air discharges
Relative humidity	5...95% noncondensing
Conducted RF immunity	10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports
EFT/B immunity	±4kV @ 5kHz on unshielded output and power ports, ±4kV @ 5kHz on shielded input ports
Operating temperature	0 to 60 °C
Surge transient immunity	±1 kV line-line (DM) and ±2 kV line-earth (CM) on unshielded output and power ports, ±2 kV line-earth (CM) on shielded input ports
Radiated RF immunity	10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
Nonoperating temperature	-40 °C

On-state voltage drop, max	0.6 Ω x current
Off-state leakage current, max	<300 µA @ 31.2V DC
Reverse polarity protection	Outputs only
Output switching time	<50 µs turn on, <300 µs turn off, Outputs triggered by Total, all other “turn-on” and “turn-off” times <1 ms
Output control	Any number of outputs is assignable to any of two flowm channels each output can have 2 “turn-on” and “turn-off” preset values
Output type	IEC 1 A 24V DC
Output voltage source	Customer supplied
Overload current	Electronic (<4 A)
Surge current	2 A @ 50 ms, repeatable every 2s
Output current per point	1 @ 10...31.2V DC @ 20mA @ 4.5...5.5V DC
Output reverse polarity protection	Yes (if wired incorrectly, module outputs can be permanently disabled.)
Output short circuit protection	Electronic (no indication of fault. remove overload and toggle output on/off to restore.)
Output voltage range, nom	5V ops: 4.5...5.5V DC @ 3...20mA load per point, 12/24V ops: 10...31.2V DC @ 40mA...1 A load per point

Input frequency, max	100 kHz @ flowm inputs (overrange occurs at 100 kHz)
Gate input on-state current, min	4 mA
Gate input on-state current, nom	15 mA
Input sampling period	User selectable
Count range, max	2, 147, 483, 647
Flowmeter input impedance	5 kΩ ±30% resistive
Mechanical filter debouncing (Z0 & Z1 Inputs)	Software selectable
Gate input voltage range	5V ops: 4.5...5.5V DC @ 12/24V ops: 10...26.4V DC
Filtering (inputs F0 & F1)	Firmware selectable: high-speed 100 kHz or low-pass filter for frequencies <70 Hz
Flowmeter input voltage	±30V, selectable input thresholds of 50mV @ 1.3V and 4V: ±30V peak unterminated open circuit voltage, magnetic pickup, TTL compatible, input voltage >1.3V DC is Logic 1 and -0.7...1.3V DC is Logic 0, 12...24V DC powered preA output, 4V DC threshold

Totalizer fill and prover	True
Enclosure type	None (open-style)

Sales Info

Repairable	REPAIRABLE
Preferred Availability	true
Quick Turnaround	false
Dimension Height	5.715
Lead Time	5
Dimension Width	18.415
Dimension Length	23.495
Stock Status	STOCKED
Weight	0.354
Weight Unit	KG
Dimension Unit	CM