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ISM-1100 amplifier
PANTRONISM-1100/24VDCDIN Rail

ISM-1100

1-channel manual infrared amplifier with selectable switching and frequency modes. The ISM-1100 is a single-channel amplifier in Pantron's ISM series for long-range through-beam sensing in contamination-heavy environments. Compared with the base ISM-1000, it adds two selectable basic transmit levels, selectable light or dark switching behavior, four selectable transmit frequencies, and an alarm output for power-limit indication.

Up to 55 m range24 VDC3.5 / 3.8 / 4.0 / 4.5 kHzLight / dark selectable

Key Features

  • Detection range up to 55 m in through-beam applications, depending on transmitter and receiver pairing.
  • Manual operation with front potentiometer for gain setting.
  • Basic transmit level is 2-fold selectable: low or high.
  • Switching behavior is selectable between light and dark mode.
  • Transmit frequency is 4-fold selectable: 3.5, 3.8, 4.0, or 4.5 kHz.
  • Floating switching output with normally open semiconductor relay, short-circuit proof.
  • Alarm output for power-limit indication and test input for system checks.
  • DIN rail mounting to EN 60715.

Best Fit Applications

  • Dirty through-beam sensing where frequency selection helps reduce interference from nearby optical systems.
  • Industrial gates, doors, and access points exposed to rain, fog, snow, or airborne contamination.
  • Bulk material, timber, paper, and processing environments where robust alignment and long range are needed.
  • Installations that benefit from switchable light/dark operation without moving up to a more complex controller platform.

This page is built from the ISM-1100 catalog data on page 9 of the Pantron catalog and follows the same product-page structure used for ISM-1000.

Technical Specifications

Channels 1
Operating voltage 24 V DC / ±20% / 2.4 W
Operating basis Modulated infrared light
Transmit frequency 3.5 kHz / 3.8 kHz / 4.0 kHz / 4.5 kHz
Transmit power Manual
Basic transmit level Low / High
Switching behavior Light / Dark
Reaction time 24 ms
Switching output Semiconductor relay, normally open
Output rating 100 mA / 60 V AC (DC)
Alarm output PNP, 100 mA / 24 V DC
Test input 0 ... 30 V DC
Housing NORYL, grey
Protection class IP20 (EN 60529)
Wire size 0.14 ... 2.5 mm²
Operating temperature -25 °C ... 50 °C
Dimensions 35.5 x 90 x 58.5 mm

Selectable Amplifier Modes

Selector Function Option A Option B
1 Basic transmit level High Low
2 Switching behavior Light Dark
3 + 4 Transmit frequency 3.5 / 3.8 / 4.0 / 4.5 kHz 4 selectable combinations

The catalog page shows the ISM-1100 using a 4-fold DIP-switch to select basic transmit level, switching behavior, and one of four transmit-frequency combinations.

Compatible Sensor Pairs and Maximum Through-Beam Range

Transmitter family With receiver IRL-... With receiver IR-... Typical use note
IT-..., ITL-... 7 m 15 m Compact standard option
IT-...HP, ITH-... 10 m 25 m Higher power range extension
ITA-... 20 m 55 m Longest stated range with ISM-1100

Ordering and Accessories

Connection style Order code
Plug (screw terminals) ISM-1100/24VDC
Screw terminals ISM-1100S/24VDC
Accessory Order code
Protective enclosure PanBox 1x1
Power supply PSU-1000 / PSU-1000S/95...265VAC

Device Layout and Wiring Notes

  • Front indicators include power (green), output status (yellow), intensity (green), and alarm (red).
  • Manual gain is adjusted by the front potentiometer.
  • The 4-fold DIP-switch sets basic transmit level, switching behavior, and transmit frequency.
  • Wiring includes operating voltage, ground, switching output, alarm output, transmitter, receiver, and test input.
  • Designed for DIN rail installation in non-safety industrial control applications.

The page 9 connection diagram shows separate terminals for switching output and alarm output, which is one of the main differences from the simpler ISM-1000 model.

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