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PHOENIX CONTACT IB IL CNT-PAC 2861852 Product Description

Overview

PHOENIX CONTACT IB IL CNT-PAC 2861852 is a Phoenix Contact Inline counter function terminal for pulse, frequency, speed, time and interval measurement in remote I/O stations. The terminal provides one counter input, one control gate input and one freely parameterizable switching output. It processes 5 V or 24 V sensor signals and acquires fast pulse sequences from encoders, proximity sensors, pulse transmitters or other pulse-producing devices. The module is mounted in an Inline station alongside a bus coupler and other Inline I/O terminals, and is used as a replacement counter terminal spare in existing Phoenix Contact automation installations.

Features

The IB IL CNT-PAC supports four operating modes: event counting, frequency or time measurement, time measurement for period or pulse length, and pulse generation. Event counting and frequency measurement use a 24-bit measured value; time measurement uses a 16-bit measured value. Input frequency is rated up to 100 kHz. The control gate input can enable or disable counting or measurement according to the configured control condition.

The terminal has one counter input and one control input, each configurable for either 24 V DC or 5 V signals, although only one signal level can be used at a time. The 24 V counter and control input accept a “0” signal from 0 to 5 V DC and a “1” signal from 15 to 30 V DC, with nominal input current typically 5 mA and input resistance approximately 5.7 kΩ. The 5 V version accepts a “0” signal from 0 to 1.5 V and a “1” signal from 3.5 to 8 V, with nominal input current typically 5 mA and input resistance approximately 1.7 kΩ.

The switching output is a 24 V DC transistor output with maximum nominal current 0.5 A, voltage difference below 1 V at nominal current, maximum ohmic load 12 W at 48 Ω, and maximum lamp load 12 W. Signal delay for an ohmic nominal load is below 50 µs. The output provides short-circuit protection and overload protection, with automatic restart after the overload or short-circuit condition is eliminated. Overcurrent shutdown starts at minimum 0.7 A.

The module electronics are supplied by the segment or Inline local bus. Segment supply is 24 V DC via voltage jumper, with supply range 19.2 to 30 V DC including tolerances and ripple. Communications power is 7.5 V DC via voltage jumper, with typical current consumption 40 mA, maximum 50 mA, and maximum UL power consumption 0.375 W. Sensor supply is generated from the segment supply and can carry maximum 500 mA. Maximum module power dissipation under nominal condition is 1.2 W.

Specs

Brand: PHOENIX CONTACTProduct family: Inline function terminal Model: IB IL CNT-PACOrder number: 2861852Product type: Counter, frequency and time measurement terminal Counter inputs: 1Control gate inputs: 1Switching outputs: 1, freely parameterizable Operating modes: Event counting, frequency measurement, time or interval measurement, pulse generator Input signal levels: 5 V DC or 24 V DC; one level used at a time Maximum input frequency: 100 kHzEvent counting and frequency measurement resolution: 24-bit value Time measurement resolution: 16-bit value 24 V input “0” range: 0 to 5 V DC24 V input “1” range: 15 to 30 V DC5 V input “0” range: 0 to 1.5 V5 V input “1” range: 3.5 to 8 VNominal input current: Typical 5 mA24 V input resistance: Approx. 5.7 kΩ5 V input resistance: Approx. 1.7 kΩOutput voltage: 24 V DCOutput current: Maximum 0.5 A nominal Maximum ohmic load: 12 W at 48 ΩMaximum lamp load: 12 WOutput signal delay: Below 50 µs on ohmic nominal load Overcurrent shutdown: Minimum 0.7 AOutput protection: Short-circuit protection and overload protection; automatic restart after fault clearance Segment supply: 24 V DC, range 19.2 to 30 V DCCommunications power: 7.5 V DC via jumper Communications current: Typical 40 mA, maximum 50 mASensor supply current: Maximum 500 mAMaximum power dissipation: 1.2 W nominal condition Connection method: Spring-cage connection Conductor cross section: Solid or stranded 0.08 to 1.5 mm², AWG 28 to 16; UL range 0.2 to 1.5 mm², AWG 24 to 16Inline local bus transmission speed: 500 kbps, copper Operating ambient temperature: -25 to 55 degrees CelsiusStorage or transport temperature: -25 to 85 degrees CelsiusOperating humidity: 10 to 95 percent, non-condensing Protection rating: IP20Protection class: Class III, IEC 61140 / EN 61140 / VDE 0140-1 Dimensions: 24.4 mm width, 135 mm heightWeight: 130 g with connectors Product status: Inline counter terminal spare for existing Phoenix Contact I/O stations

Principle

The Inline counter terminal acquires pulse sequences from a connected sensor through the counter input, or source signal. The control input, or gate, enables, disables or qualifies the measurement according to the configured control logic. In event-counting mode, the terminal counts pulses under the selected counting condition. In frequency measurement mode, it measures pulse frequency or speed over a configured gate time. In time-measurement mode, it measures period, pulse length or interval with the configured resolution. In pulse-generator mode, it produces square-wave signals.

The terminal processes the pulse signal locally and exchanges process data with the bus coupler or controller over the Inline local bus. The switching output can be set independently of the bus and controller, allowing fast local response for limit-value, threshold or counting actions. The bus controller reads the measured count, frequency or time value and writes parameters, operating mode, start or final values and output configuration through the Inline station.

The sensor supply is derived from the segment supply and protected against short-circuit and overload. The module logic supply and I/O supply should follow the Inline system isolation recommendations; logic and I/O areas should be supplied from separate power supplies where isolation is required. Replacement should verify the Inline station, bus coupler, local bus jumper, segment supply, sensor signal level, sensor supply current, terminal wiring, process-data assignment, operating mode and controller parameter configuration before commissioning.

Applications

PHOENIX CONTACT IB IL CNT-PAC 2861852 is used in Inline remote I/O stations for speed and pulse measurement, encoder pulse counting, flow pulse totalizing, conveyor or motor speed monitoring, position or travel pulse feedback, production counting, interval or cycle-time measurement, frequency monitoring, pump or fan speed indication, packaging machinery, material handling, machine tools, process equipment and general industrial automation. It connects incremental encoder outputs, proximity switches, photoelectric sensors, pulse transmitters, turbine or flowmeter pulse outputs and other digital pulse devices. In existing Phoenix Contact Inline systems, the terminal serves as a direct replacement counter spare when the station configuration, signal level, wiring and parameter set match the original installation.