GE IC660HHM501 Genius Hand-Held Monitor (HHM)

Product Overview

The GE IC660HHM501 (IC660HHM501) is a rugged, portable interface tool designed for the commissioning, configuration, and troubleshooting of GE Genius I/O distributed systems. Serving as a critical diagnostic asset for field engineers, this Hand-Held Monitor (HHM) allows for direct communication with Genius I/O blocks, even in the absence of a host PLC or computer. It is widely utilized in large-scale industrial environments like automotive assembly, wastewater treatment, and power utilities to significantly reduce MTTR (Mean Time To Repair). By enabling operators to force I/O, clear faults, and adjust hardware parameters at the point of installation, the IC660HHM501 eliminates the need for technicians to travel back and forth between the field and the central control room.

Technical Configuration

The IC660HHM501 is engineered for high-stress industrial use, featuring a robust 20-key sealed membrane keypad and a 4-line by 16-character LCD display. Its hardware configuration is optimized for flexibility and field durability:

• Interface Capabilities: Provides full access to device configurations, I/O monitoring, bus status data, and CPU memory diagnostics.

• Dual Power Logic: Operates on a rechargeable internal battery for up to 6 hours or via an external 115/230 VAC power source.

• Security & Control: Integrated with a physical keyswitch to restrict unauthorized users from accessing sensitive configuration or I/O forcing functions.

• Network Integration: Connects directly to the Genius Bus at a standard data rate of 153.6 Kbaud, facilitating real-time visibility into global data addresses and bus scan times.

• Environmental Protection: The unit is drop-tested for 4 feet onto concrete and comes in a protective leather carrying case to withstand harsh factory floors.

Technical Specifications

Technical FAQs

Can the IC660HHM501 clear faults on a Genius I/O block?

Yes, the HHM provides a dedicated "Clear Faults" function that allows technicians to reset diagnostic flags and clear error histories directly from the block’s memory without requiring a PLC download.

Is it possible to use the HHM while the Genius network is active?

Absolutely. The IC660HHM501 functions as a passive listener or an active node on the Genius network. It can monitor live data traffic or perform configuration changes while the system is running, provided the bus address is properly managed.

What should I do if the screen fails to turn on while on battery power?

First, check the battery charge level. If the unit has been in storage, the battery may require a full 6-hour charge cycle. Ensure the physical keyswitch is in the correct position, as certain models may have power-on interlocks linked to the keyswitch.

Engineering & Installation Guide

• Bus Connection Protocol: When connecting the IC660HHM501 to a live Genius Bus, ensure the HHM is assigned a unique Serial Bus Address (SBA). Typically, SBA 31 is reserved for the HHM, but if multiple monitors are used, verify there are no address conflicts to avoid network collisions.

• Battery Maintenance: To maximize the lifespan of the internal rechargeable battery, avoid deep discharge cycles. If the unit is used primarily as a bench tool with AC power, a battery pack must still be installed for the internal charging circuit to function correctly.

• Signal Integrity: If you experience communication errors when connecting the HHM at long distances from the controller, ensure that the network is properly terminated with a 75, 100, or 150 Ohm resistor (matching the cable type). In some legacy releases, adding a 75 Ohm resistor specifically at the HHM connection point can resolve high-impedance signal issues.