GE i Series CNC System Operation Panel Comprehensive Guide

GE i Series CNC System Operation Panel Comprehensive Guide

Introduction

The i-series CNC system operation panel provided by GE Fanuc Automation is designed specifically for Series 15i, 16i, 18i, 21i CNC and Power Mate i-series (D and H models). These control panels are connected to CNC through an I/O Link communication bus, supporting various industrial application scenarios such as milling machines and lathes. This article aims to comprehensively introduce the technical specifications, installation methods, power configuration, I/O interface definition, MPG interface usage, and maintenance precautions of these operation panels.

Overview of Operation Panel

1.1 Applicable Control Types

Series 15i CNC

Series 16i/18i CNC

Series 21i CNC

Power Mate i (D and H models)

1.2 Operation panel model

GE Fanuc offers two main types of operation panels:

North American operation panel

Size: 520mm × 180mm × 90mm or 400mm × 180mm × 90mm

Features:

UL Certification

Control ON/OFF button, used to control 24VDC power supply

Supports up to three manual pulse generators

Backlight button with replaceable lens cap

Optional high brightness LED or incandescent lamp

Distributed I/O operation panel

Model: A02B-0236-C140/C141

Features:

CE Certification

Built in I/O connection unit, supporting up to three MPGs

Thin film keyboard with embedded LED

Suitable for lathes (T-type) and machining centers (M-type)

Connecting units and interfaces

2.1 I/O Link Communication

All operation panels communicate with CNC through I/O Link. I/O Link is a high-speed serial interface that supports up to 16 modules, with a total of 1024/1024 I/O points.

2.2 Connection Unit Model

A20B-2002-0470:72 input/56 output, supports matrix input, electronic fuse, supports up to three MPGs.

A20B-2002-0520:48 input/32 output, non matrix input, supports MPG.

A20B-2002-0521:48 input/32 output, non matrix input, does not support MPG.

2.3 Precautions for MPG interface

The MPG interface is only available in the i-series CNC. If there are multiple MPG interface units in the system, only the MPG interface closest to the CNC is valid.

Power configuration

3.1 Power Requirements

Input voltage: DC 24V ± 10%

Maximum current: 8A (North American operation panel)

Power connector: PL1 (screw terminal)

3.2 Power Connection Method

For Series 16i/18i/21i and Power Mate i

Using an external 24VDC power supply

Recommended cable kit: 44C742962-G01

including:

44C742962-006: Power supply to PL1

44C742962-005: PL1 to connection unit

44C742974-001: Connecting unit to CNC/LCD

For Series 15i

Use built-in power supply (200VAC)

Recommended cable kit: 44A739097-G01

including:

44C742962-010: PL1 to CPD1

44C742974-001: CPD1 to LCD

Connectors and terminals

3.3 Precautions

It is strictly prohibited to cut off the 24V power supply during operation, otherwise it may cause the CNC system to alarm.

Reversing the polarity of the power supply can damage the CNC inverter board.

The maximum output of the 24V switch on the operation panel is 8A.

I/O interface and address mapping

4.1 DI/DO Types

North American operation panel

44 matrix inputs (buttons)

12 discrete inputs (rotary switch)

12 outputs, 12 matrix inputs, and 4 discrete inputs available to users

Distributed I/O operation panel

24 ordinary DI

Matrix keyboard (42/46/53 keys)

LED output corresponds to each button

4.2 DI/DO Address Mapping Example

DI mapping (16 bytes)

Xm+0: Rotary switch/protection key

Xm+1-3: Ordinary DI

Xm+4~11: Keyboard input

Xm+12~14: MPG counter

Xm+15: DO alarm

DO mapping (8 bytes)

Yn~Yn+7: Keyboard LED

4.3 Fixed Address Signal

X0004: SKIP signal

X0007：*DECn#2

X0008：*ESP

X0009：*DECn#1

Manual pulse generator connection

5.1 Connection method

MPG is connected through the JA3 interface and supports up to three units. Recommended cables:

A02B-0120-K841 (3 MPGs, 7m)

A02B-0120-K848 (2 MPGs, 7m)

A02B-0120-K847 (1 MPG, 7m)

5.2 Cable length calculation

Voltage drop formula:

0.2≥0.1×R×2L/m

Example: Use A66L-00001-0286 cable (0.0394 Ω/m) with 3 wires for power supply:

1 MPG: L ≤ 76.75m (recommended ≤ 50m)

2 MPGs: L ≤ 38.37m

3 MPGs: L ≤ 25.58m

5.3 Electrical Requirements

HA/HB pulse period: ≥ 200 μ s

High level: ≥ 3.7V

Low level: ≤ 1.5V

Installation and maintenance

6.1 Installation environment requirements

Operating temperature: 0 ℃~55 ℃

Storage temperature: -20 ℃~60 ℃

Humidity: ≤ 75% (short-term ≤ 95%)

Vibration: ≤ 0.5G

6.2 Jumper Setting (JP1)

Incandescent lamp: jumper in rectangle (preheating mode)

LED: Jumper outside the rectangle

6.3 Maintenance Tools

Light bulb extraction tool: 44A739089-G01

LED conversion kit: 44A736871-G01 (45 keys)/G02 (53 keys)

Replace buttons, lens caps, knobs, etc

Safety precautions

The emergency stop button must be wired by the machine tool manufacturer according to the application requirements.

Do not disconnect the 24V power supply during operation.

Replace the light bulb with non-conductive tools to avoid short circuits.

The emergency stop signal should be assigned to a fixed address (such as Xm+2.4).

Fault diagnosis and alarm

8.1 DO alarm

The DO driver IC has overload and overheat protection. The alarm status is indicated by Xm+15:

Xm+15.0: Yn+0 alarm

Xm+15.1: Yn+1 alarm

and so on

8.2 System Alarm

If there is an I/O Link communication interruption or CNC system alarm, all DO outputs will automatically shut down.