The X-22s expansion module is used with an X-400 or X-600M controller. The X-22s has eight precision analog inputs that can be configured for various voltage ranges and 4-20mA sensors. The X-22s employs a 16-bit SAR A/D converter and can make both single or differential input measurements. A 5.0V reference output can be used to power potentiometers or other resistance sensing sensors. The X-22s is ideal for measuring precision analog voltages in industrial environments.

One or more X-22s expansion modules can be connected to an X-400 controller with a ribbon cable. The ribbon cable provides both power and communications to the expansion modules.

Other expansion modules with different I/O combinations are also available.

The X-22s monitoring tank levels

X-22s Part Number

X-22s N/A Analog: 8 (±1.28V, ±2.56V, ±5.12V, ±10.24V, 4-20mA) 9-28VDC


  • Eight precision analog inputs
  • Input Voltage Ranges:
    ±1.28V, ±2.56V, ±5.12V, ±10.24V, 4-20mA
  • Removable terminal connector
  • Powered through expansion bus – no separate power supply connections are required
  • High input impedance
  • Great for monitoring applications including:
    • Temperature
    • Electrical Current
    • Pressure
    • Fluid Levels
    • and much more…

Power Requirements

  • Voltage: 9-28VDC (supplied via the X-400 controller, 24V recommended)
  • Max Current:
Power Supply Current (voltage mode) Current (current mode)
9 VDC 42 mA 83 mA
12 VDC 32 mA 62 mA
24 VDC 17 mA 33 mA

Analog Inputs

  • Number of Inputs: 8
  • Type: Single-ended, differential, 4-20mA (0-20mA), or a combination
  • Input Range: ±1.28V, ±2.56V, ±5.12V, ±10.24V, 4-20mA
    **Note that inputs have high impedance so input range can easily be adjusted using external resistors. Example: 0 to 48 Volts
  • Resolution: 16-bit, SAR

Reference Output

  • Voltage: 5.00V
  • Accuracy: 0.04%
  • Temperature Coefficient: 3ppm/°C Max
  • Current: 25mA max*

*Maximum current from the reference may be increased if the environmental temperature is decreased. See users manual for more information.


  • Inputs: 14-Position, 3.81mm terminal spacing, Removable. For 16-28 AWG wire.
  • Expansion Connector: Ribbon cable, 10-conductor, polarized, 2×5-position, 0.100″ pitch Provides power and communications for expansion modules (Communications: RS-485)

LED Indicators

  • Number of LEDs: 1
    • Power on


  • Size:
    • 1.41in (35.7mm) wide
    • 3.88in (98.5mm) tall
    • 3.1in (78mm) deep (not including connector)
  • Weight: 5 oz. (142 g)
  • Enclosure Material: Lexan 940 Polycarbonate Plastic
  • Enclosure Flame Rating: UL94 V0


  • Operating Temperature*: 0°C to 50°C (32°F to 122°F)
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F)
  • Humidity: 5-95%, non-condensing
  • Indoor use or NEMA-4 protected location

*Max operating temperature may be increased at the expense of current through the 5V reference. See the X-22s users manual for more details.

Electromagnetic Compliance

  • IEC CISPR 22, CISPR 24
  • FCC 47CFR15 (Class B)
  • EN55024 ITE Immunity (2010)
  • EN55022 Emissions (2010)

Product Safety Compliance

  • UL 61010-1 (Electrical Equipment for Measurement, Control, and Laboratory Use)

Users Manuals

X-22s Users Manual (PDF) (Rev: 2.0. 2.5 MB)

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