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ISM-2000 multiplex amplifier
PANTRONISM-2000 / ISM-2000S

ISM-2000

2-channel multiplex infrared amplifier for compact multi-beam sensing. The ISM-2000 is a two-channel infrared multiplex amplifier designed for long-range, contamination-resistant optical sensing. It gives each channel selectable manual or automatic operation plus selectable light / dark behaviour, while providing separate floating switching outputs, alarm and error outputs, test input, and sensor control in a narrow DIN-rail package.

2 channelsUp to 60 m range24 VDC3.9 kHz8 ms multiplexAlarm + error outputs

Key Features

  • Two multiplexed sensing channels in one compact amplifier.
  • Detection range up to 55 m stated in the feature summary, with maximum-range table extending to 60 m depending on sensor pair.
  • Manual or automatic operating basis selectable per channel.
  • Basic transmit power selectable per channel.
  • Light / dark switching behaviour selectable per channel.
  • Floating distance switching outputs are short-circuit proof.
  • Alarm output for power limit plus separate error output.
  • Includes test input, sensor control, and DIN-rail mounting to EN 60715.

Best Fit Applications

  • Two independent through-beam sensing points in a single control cabinet footprint.
  • Harsh industrial environments where dirt, spray, dust, or fog affect conventional photoelectric devices.
  • Car wash, timber, process automation, and heavy-duty machine applications needing paired sensing points.
  • Machine designs that benefit from compact channel density without stepping up to a larger display-based multiplexer.

The ISM-2000 bridges the gap between single-channel ISM amplifiers and the larger menu-driven multi-channel ISM-4000 and ISM-8000 platforms.

Technical Specifications

Channels 2
Operating voltage 24 V DC / ±20% / 3.6 W
Operating basis Modulated infrared light
Transmit frequency 3.9 kHz
Transmit power Manual / Automatic
Basic transmit level Low / High
Switching behaviour Light / Dark
Switching delay
Multiplex speed 8 ms
Primary / Secondary operation
Reaction time 24 ms
Switching output 2x semiconductor relay, normally open
Output rating 100 mA / 60 V AC (DC)
Alarm output / Error output PNP / PNP
Alarm / Error output rating 100 mA / 24 V DC
Test input 0 ... 30 V DC
Analog output
COM interface
Housing material NORYL, grey
Protection class IP20 (EN 60529)
Connection Plug (screw terminals) or screw terminals
Wire size 0.14 ... 2.5 mm²
Operating temperature -25 °C ... 50 °C
Dimensions 35.5 x 90 x 58.5 mm

Operating Modes and Configuration

Selector Function Channel 1 / A Channel 2 / B
1 / 4 Operating basis manual or automatic manual or automatic
2 / 5 Basic transmit power high or low high or low
3 / 6 Switching behaviour light or dark light or dark

The 6-fold DIP-switch splits into three settings for channel 1 and three settings for channel 2, allowing each channel to be configured for operating basis, basic transmit power, and switching behaviour.

Compatible Sensor Pairs and Maximum Through-Beam Range

Transmitter family With receiver IRL-... With receiver IR-... Typical use note
IT-..., ITL-... 10 m 15 m Standard compact pairing
IT-...HP, ITH-... 12 m 25 m Higher-power range extension
ITA-... 25 m 60 m Longest stated range with ISM-2000

Ordering and Accessories

Connection Order code
Plug (screw terminals) ISM-2000/24VDC
Screw terminals ISM-2000S/24VDC
Accessory Order code Catalog page
Protective enclosure PanBox 1x2 78
Power supply PSU-1000 PSU-1000S/95...265VAC 80

Device Layout and Wiring Notes

  • Front panel includes separate gain, intensity, output-status, and sensor-error indicators for each channel.
  • Channel 1 and channel 2 each have their own adjustable potentiometer for gain setting.
  • The connection diagram shows separate outputs for both channels plus dedicated error and alarm outputs.
  • One test input is provided for system check at 24 VDC / 2 mA.

The ISM-2000 is a practical choice when two independent through-beam paths must be managed without moving to the display-based 4-channel and 8-channel models.

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