1. Product Overview
The ICM Controls ACS-8 is an 8-pin octal plug-in base designed for use with various plug-in style phase monitors and timers. It provides a secure and reliable connection point for compatible devices, ensuring proper electrical contact and mechanical stability.

Image: The ICM Controls ACS-8 8-Pin Octal Plug-in Base, showing its grey housing, eight pin receptacles, and screw terminals for wiring connections. A red locating key is visible on one side.
2. Key Features
- Relay Socket: Functions as a robust relay socket for plug-in devices.
- 8-Pin Octal Design: Specifically designed for 8-pin octal plug-in components.
- Locating Key: Features a locating key to ensure correct orientation and prevent improper insertion of compatible devices.
- Compatibility: Intended for use with ICM408 three-phase monitors and ICM500 Series multi-mode timers.
3. Setup and Installation
Installation of the ACS-8 base involves securing it to a panel or enclosure and wiring the appropriate electrical connections. Ensure all power is disconnected before beginning installation.
- Mounting: Secure the ACS-8 base to a stable surface using appropriate fasteners through its mounting holes.
- Wiring: Connect the electrical wires to the screw terminals on the base. Refer to the wiring diagram of the specific phase monitor or timer being used for correct terminal assignments. Ensure all connections are tight and secure.
- Device Insertion: Align the compatible 8-pin octal phase monitor or timer with the ACS-8 base, ensuring the locating key on the device matches the slot on the base. Gently push the device into the base until it is fully seated.
- Power On: Once the device is securely installed and all wiring is verified, restore power to the system.
Important: Always consult the specific wiring diagrams and safety instructions provided with the phase monitor or timer you intend to use with this base.
4. Operating Principles
The ACS-8 functions as a passive interface, providing the necessary electrical and mechanical connection for an 8-pin octal plug-in device. It does not perform any active monitoring or timing functions itself. Its operation is entirely dependent on the functionality of the device plugged into it, such as an ICM408 three-phase monitor or an ICM500 Series multi-mode timer.
Once a compatible device is correctly inserted and powered, the ACS-8 base facilitates the electrical signals and power flow required for the device to operate as intended.
5. Maintenance
The ICM Controls ACS-8 8-Pin Octal Plug-in Base is designed for minimal maintenance. Regular inspection is recommended to ensure optimal performance.
- Visual Inspection: Periodically check the base for any signs of physical damage, discoloration, or loose connections.
- Cleaning: If necessary, gently clean the exterior of the base with a dry, soft cloth. Do not use abrasive cleaners or solvents. Ensure power is disconnected before cleaning.
- Connection Integrity: Verify that the plug-in device is securely seated and that all wired connections remain tight.
6. Troubleshooting
If the system incorporating the ACS-8 base is not functioning as expected, consider the following troubleshooting steps:
- No Power to Device: Verify that power is supplied to the base and that all wiring connections are correct and secure. Check circuit breakers or fuses.
- Device Not Functioning: Ensure the plug-in device (monitor/timer) is fully and correctly seated in the ACS-8 base. The locating key should ensure proper orientation.
- Intermittent Operation: Check for loose wiring connections at the screw terminals of the base. Ensure the plug-in device is not loose in its socket.
- Incorrect Device: Confirm that the device being plugged into the ACS-8 is an 8-pin octal type and compatible with the base.
If issues persist after performing these checks, consult the user manual for the specific phase monitor or timer being used, or contact ICM Controls technical support.
7. Specifications
| Attribute | Value |
|---|---|
| Model Number | ACS-8 |
| Product Dimensions | 2 x 2 x 2 inches |
| Item Weight | 1.6 ounces |
| Manufacturer | ICM Controls |
| Compatibility | ICM408 three-phase monitors, ICM500 Series multi-mode timers |
8. Warranty and Support
For specific warranty information regarding the ICM Controls ACS-8, please refer to the documentation provided with your purchase or visit the official ICM Controls website. Warranty terms typically cover defects in materials and workmanship under normal use.
For technical support, product inquiries, or assistance with troubleshooting beyond the scope of this manual, please contact ICM Controls customer service directly. Contact information can usually be found on the manufacturer's website or product packaging.





