Ground Master is a ground monitor produced by Credence Tech which can monitor up to 8 devices and has safety protection function.
The Ground Master series from Credence Technologies provides continuous monitoring of equipment grounding and EMI on up to eight or sixteen tools. Each ground connection has an individual fuse, status LED, and enable switch, and the device can output relay closure or logic signals to shut down a tool when a ground fault occurs.
The manual covers applications in semiconductor equipment, industrial robotics, medical environments, and other sensitive locations. It details the RJ45 data connector, MODBUS interface, 4‑20 mA current loop, 24 V DC power, and physical dimensions, as well as safety and alarm‑threshold settings.
| Alarm Threshold | 1 – 20 Ω (user‑adjustable) |
|---|---|
| Current Loop Output | 4 – 20 mA |
| Power Supply Voltage | 24 V DC |
| Current Consumption | < 250 mA |
| Dimensions (approx.) | 4.5" × 3.6" × 1.1" (114 mm × 92 mm × 28 mm) |
| Data Connector | RJ45 |
| Channel Indicators | Visual LEDs for each channel |
| Audio Alert | Buzzer |
| Enable Switches | One per channel |
The alarm threshold can be set between 1 and 20 Ω.
It operates from a 24 V DC supply and consumes less than 250 mA.