Limit Alarms
Process limit alarms monitor sensors or process current input signals and trip a relay output if the input exceeds a user-defined hi/lo setpoint limit. Select from AC-, DC, and loop-powered models. Configuration is easy with Windows® software, push-buttons, switches, or pots for settings depending on the series. Other cost-effective alternatives are transmitters with integrated alarms or remote I/O modules for Modbus networks with built-in trips for local alarm functions.Showing all 3 results
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913MB, 914MB: DC Current/Voltage Modbus-RTU Input Module with Limit Alarms
- 4 input channels
- 0 to 20mA DC (0 to 20A AC with AC sensor) or ±10V DC input range
- 4 alarm channels, open drain MOSFETS (1A DC loads, 0 to 35V DC)
- 10 to 36V DC, 24V AC power
- Modbus RTU high-speed RS-485
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924MB: Thermocouple/milliVolt Modbus-RTU Input Module with Limit Alarms
- 4 input channels, thermocouple (types J, K, T, R, S, E, B, N) or millivolt (±100mV DC) input
- 4 alarm channels, open drain MOSFETS (1A DC loads, 0 to 35V DC)
- 10 to 36V DC, 24V AC power
- Modbus-RTU high-speed RS-485
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942MB: Frequency/Pulse Counter Modbus-RTU Input Modules with Periodic or Pulse Waveform Input
- 2 input channels, 0 to 50KHz in 3 selectable ranges: Amplitudes up to 140V AC peak, Amplitudes up to 200V peak, Pulse counter range of 0 to 65535
- Solid-state discrete output relays (1A DC loads), 0 to 48V DC
- 10 to 36V DC, 24V AC power
- Modbus-RTU high-speed RS-485
Signal Conditioning Selection Guide Videos
Welcome to our Signal Conditioning Selection Guide Videos. As a business with many helpful products to offer, we know it can be difficult to find which one you need. This quick selection guide should help point you in the right direction. Choose which video corresponds to your power needs, and the guide will show you which Acromag modules will work with your input.