Product Overview
Action Instruments Action Pak 1001-7064 DC Input Limit Alarm Relay
Condition
Unused new old stock (NOS). Markings legible: ACTION PAK MDL 1001-7064, IN 0-1V DC, OUT RELAY DPDT, PWR 120V AC, REV E-029341. Manufacturer warranty sticker intact across the housing seam.
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Product Overview
Action Instruments Action Pak model 1001-7064 is a plug-in DC voltage limit alarm module designed for process monitoring and equipment protection. Operating on a 120V AC line supply, it accepts a low-level 0 to 1V DC input signal and trips an internal DPDT relay output when the monitored process crosses the calibrated threshold. A top-mounted rotary dial calibrated 0 to 100 percent provides direct setpoint adjustment, while accessible span and zero trimpots allow calibration trimming. The unit mounts into a standard 20-pin circular base socket for rapid installation and service in industrial control panels.
Key Features
- Input signal range: 0 to 1V DC
- Output configuration: DPDT electromechanical relay
- Contact rating: 5A resistive at 120V AC
- Operating power: 120V AC, 50/60 Hz
- Setpoint adjustment: Top-mounted dial calibrated 0% to 100%
- Calibration controls: Accessible SPAN and ZERO trimpots under front cover strip
- Mounting: 20-pin circular keyed plug-in base
- Housing: Clear polycarbonate enclosure with molded base
Applications
- Monitors low-voltage DC signals from process transducers, current shunts, or analog instrument cards.
- Triggers interlocks, sirens, or status indicators when DC bus or sensor voltage exceeds setpoint.
- Provides benchtop experimenters and control builders with a dedicated hardware comparator relay that requires no microcontrollers.
Frequently Asked Questions
Is the relay output latching or non-latching?
The internal DPDT relay operates in non-latching mode, automatically resetting once the 0-1V DC input signal drops back below the dial setpoint threshold.
How is the trip setpoint calibrated on this unit?
The primary threshold is set using the top-mounted 0% to 100% dial, while precise calibration trimming is handled through the SPAN and ZERO trimpots located under the protective front cover strip.
What mounting socket does this module plug into?
This unit requires a standard Action Pak 20-pin circular keyed socket, such as the MD20 chassis or track-mounted base, wired for 120V AC power and 0-1V DC signal input.
Built for control racks where an analog signal needs a decisive relay trip without software in the loop. Plug it in, dial your percentage, and let the hardware handle the line.
