DOCA0355EN-00

Motor Start Logs

Description

The LTMT main unit records 250 current values measured during the last motor start.

One log can be saved to serve as motor start reference log.

The last motor start log can be saved as reference log by using:

  • The TeSys Tera DTM.

  • A command from a PLC or DCS via the communication network.

The last motor start log and the reference log:

  • Can be displayed with the TeSys Tera DTM.

  • Are available for PLC or DCS via the communication network.

Two read requests of 128 registers are necessary to read the last motor start log, and two read requests of 128 registers are necessary to read the reference log.

Sampling Interval

The sampling interval is based on the trip class selected in the thermal overload settings.
Trip class Sampling interval
5 20 ms
10 40 ms
15 60 ms
20 80 ms
25 100 ms
30 120 ms
35 140 ms
40 160 ms

Last Motor Start Log Registers

The table lists the registers for the last motor start log.

Address

Register

No.

Function code

RW

X

Unit

Type

Range Default value

Svd

Description

0x20B7 8376

4

0x03

R

UINT16

Y

Date and Time

0x20BB

8380

1

0x03

R

1

ms

UINT16

20–160

Y

Sampling interval

0x20BC

8381

1

0x03

R

0.1

A

UINT16

3–50000

Y

Full load current (IFLC)

0x20BD

8382

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 1

0x20BE

8383

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 2

0x20BF

8384

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 3

0x22B6

8631

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 250

Reference Log Registers

The table lists the registers for the reference log.

Address

Register

No.

Function code

RW

X

Unit

Type

Range Default value

Svd

Description

0x222E 8751

4

0x03

R

UINT16

Y

Date and Time

0x2232

8755

1

0x03

R

1

ms

UINT16

20–160

Y

Sampling interval

0x2233

8756

1

0x03

R

0.1

A

UINT16

3–50000

Y

Full load current (IFLC)

0x2234

8757

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 1

0x2235

8758

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 2

0x2236

8759

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 3

0x232D

9006

1

0x03

R

0.1

%IFLC

UINT16

Y

Sample 250

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