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Quick Start Guide

For 

HM

i

Operator Interface

General Description

Positioned between the ELC graphics panels and the ePro series of operator interfaces, 

HM

i

is the work

horse of the industry. All units feature a touchscreen and function keys to suit all environments and
applications. They range in screen size and color to fit available space and application needs. All units
offer RS-232, RS-485 and RS-422 communications.

True analog touchscreen

Retentive internal data storage

Real time trending

Trend stored data

Alarming and alarm storage

Alarm frequency

Event storage (History)

USB programming

USB memory storage

USB printer

Add I/O

Macro programming

Multi-language

Recipe storage

Auto-scale application from 10 – 4"

On-line simulation

Off-line simulation

10 level password protection

Safety Information

Carefully note and observe the following safety precautions when receiving, inspecting, installing,
operating, maintaining and troubleshooting. The following words, WARNING AND CAUTION, are used to
mark safety precautions when using the Eaton product. Failure to observe these precautions may void
the warranty!

Installation

Comply with instructions for installation. Otherwise it may cause equipment damage. 

Do not install the product in a location that is outside the stated specification for the device. Failure
to observe this caution may result in electric shock, fire or personal injury.

Wiring

Connect the ground terminals to a class-3 ground (ground resistance should not exceed 100

Ω

).

Improper grounding may result in electric shock or fire. 

Operation

HM

i

users should use screen editor software to perform editing. Using 

HM

i

without the screen

editor software may result in abnormal operation.

Do not modify wiring during operation. Otherwise it may result in electric shock or personal injury.

Never use a hard or pointed object to hit or strike the screen as doing this may damage the screen,
causing 

HM

i

to work abnormally.

Maintenance and Inspection

Do not touch any internal or exposed parts of the device as electrical shock may result.

Do not remove operation panel while power is on. Otherwise electrical shock may result.

Wait at least 10 minutes after power has been removed before touching any terminals or
performing any wiring and/or inspection as an electrical charge with hazardous voltages may still
remain in the unit even after power has been removed.

Turn the power off before changing backup battery and check system settings after finishing the
change (all data will be cleared after changing the battery).

Be sure the ventilation holes are not obstructed during operation, or malfunction may result.

Wiring Method

Remove the terminal block from the 

HM

i

before wiring.

Insert only one wire into one terminal on the terminal block.

If the wiring is in error, perform the wiring again with proper tools. Never use force to remove the
terminals or wires, or malfunction or damage may result.

Communication Wiring

Comply with communication wiring specification for wiring.

Wiring length should comply with the stated specification for 

HM

i

.

Ensure proper grounding to avoid bad communication quality.

Available Communication Parts

2

COM1 Port

PIN

Contact

RS-232

1

N.C.

2

RXD

3

TXD

4

N.C.

5

GND

6

N.C.

7

RTS

8

CTS

9

N.C.

A

Power input terminal

B

Expansion slot

C

Memory card

D

COM 2

E

COM 1

F

USB

A

Power input terminal

B

Expansion slot

C

Memory card

D

COM 2

E

COM 1

F

USB

A

Power input terminal

B

Expansion slot

C

Memory card

D

COM 2

E

COM 1

F

USB

G

Battery cover

COM2 Port

PIN

MODE 1

MODE 2

RS-422

RS-485

R-

RXD-

D-

R+

RXD+

D+

T-

TXD-

D-

T+

TXD+

D+

G

GND

GND

COM2 and COM3 Port

COMM

Port

PIN

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

RS-232

RS-422

RS-485

RS-232*2

RS-422*2

RS-485*2

COM2

1

N.C.

RXD-

D-

N.C.

RXD1-

D1-

2

RXD

RXD+

D+

RXD1

RXD1+

D1+

3

TXD

TXD+

D+

TXD1

TXD1+

D1+

4

N.C.

TXD-

D-

N.C.

TXD1-

D1-

5

GND

GND

GND

GND

GND

GND

COM3

6

N.C.

RTS-

N.C.

N.C.

TXD2-

D2-

7

RTS

RTS+

N.C.

TXD2

TXD2+

D2+

8

CTS

CTS+

N.C.

RXD2

RXD2+

D2+

9

N.C.

CTS-

N.C.

N.C.

RXD2-

D2-

COM1 and COM3 Port

COMM

Port

PIN

MODE 1

MODE 2

RS-232

RS-422

COM1

1

N.C.

N.C.

2

RXD

RXD1

3

TXD

TXD1

4

N.C.

N.C.

5

GND

GND

COM3

6

N.C.

N.C.

7

RTS

TXD2

8

CTS

RXD2

9

N.C.

N.C.

C

A

DE

F

B

C

A

B

D

E

F

G

C

A

B

D

E

F

G

4" HM

i

6" HM

i

8" HM

i

10" HM

i

HM

i Operator

Interfaces

Accessories (sold Separately)

The following accessories could help improve your 

HM

i

experience.

ELC-CBPCELCE — 3 meter cable to connect between the 

HM

i

and Eaton Logic Controller (ELC)

ELC-CBPCELC1 — 1 meter cable to connect between the 

HM

i

and Eaton Logic Controller (ELC)

HMIECPTR parallel printer expansion module

HMIEC0808 8 input and 8 output expansion module

HMIECENT Ethernet expansion card. Modbus TCP, upload and download

Unpack and Inspect

Included with the 

HM

i

are:

Panel Mounting clips (number of clips varies depending on the size of the unit).

DB9 gender changer for easy connection to the Eaton Logic Controller (ELC).

3-pin power 24V DC connector. 

1

For 6", 8" and 10" HM

i Only

8" HM

i

10" HM

i

6" HM

i

A

Power input terminal

B

COM 2

C

COM 1

D

USB

A

B

D

C

4" HM

i

For 4" HM

i Only

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