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BA 2076/02/01

4 Electrical connection

4.2.24.2.2

4.2.2

4 to 20 mA active Sensor I4 to 20 mA active Sensor I

4 to 20 mA active Sensor I

Input I

has an internal voltage supply for a sensor with

4 to 20 mA output and

no ownno own

no own voltage supply

(e.g., MT-ST160SK/TT)

Sensor connection (+): Terminal 12

Sensor connection (-): Terminal 13

Shield: Terminal 11

Caution:Caution:

Caution: Adhere to the maximum load of

the sensor and the circuiting.

4.2.34.2.3

4.2.3

4 to 20 mA passive Sensor I4 to 20 mA passive Sensor I

4 to 20 mA passive Sensor I

Input I

is designed for a sensor with 4 to 20 mA output and

its

ownown

own voltage supply (e.g., TT-PWM60).

Sensor connection (+): Terminal 13 (8),

Sensor connection (-): Terminal 14 (7),

Shield: Terminal 11 (10)

Supply voltage: 24 VDC ± 10%

Caution:Caution:

Caution: Adhere to the maximum load of

the sensor and the circuiting.

4.44.4

4.4

Analog OutputsAnalog Outputs

Analog Outputs

The analog outputs for oil and winding temperature can be

parameterized as desired to the following values.

• 0 to 10 V

• 0 to 1 mA

• 4 to 20 mA (error signal < 3.6 mA)

• 4 to 20 mA (error signal > 22 mA)

• 0 to 20 mA (error signal > 22 mA)

The error signal is output on the analog output when the

input sensor is defective.

With the current outputs, the maximum load (total resistance

of the lines and connected devices) of 750 W may not be

exceeded. The internal voltage supply is 24 V DC

+10%. When

a current output is not used, its terminals (+) and (-) must be

jumpered. Otherwise an error message is output.

When an analog output is parameterized to 0 - 10 V, this

must be loaded with at least 1 kW. The voltage output may not

be jumpered. An open or defective voltage output is not

detected.

Analog output 1 “Output Oil-TAnalog output 1 “Output Oil-T

Analog output 1 “Output Oil-T

emp“emp“

emp“

Line connection (+): Terminal 2

Line connection (-): Terminal 3

Shield: Terminal 1

The range of analog output 1 corresponds

to the input range of the sensor (refer to

nameplate), standard: -20 to +140 °C.

Example: 4 to 20 mA output:

4 mA corresponds to -20 °C

20 mA corresponds to +140 °C

Analog output 2 “Output Winding“Analog output 2 “Output Winding“

Analog output 2 “Output Winding“

Line connection (+): Terminal 5

Line connection (-): Terminal 6

Shield: Terminal 4

The range of analog output 2 is specified

on the nameplate (standard: 0 to +160 °C).

Example: 4 to 20 mA output:

4 mA corresponds to 0 °C

20 mA corresponds to +160 °C

4.54.5

4.5

Digital interfacesDigital interfaces

Digital interfaces

To be able to parameterize the EPT202 with the visualization

software and call up the data, the EPT202 must be connected

via an interface with a PC. The following interfaces are

available for this purpose.

• RS 232

• RS 485 (bus-capability)

Input 4...20mA

1211

Output

Winding

Output

Oil Temp.

321

Input 4...20mA

14131211

RS 232RS 232

RS 232

To transmit data between a PC and the EPT202 via the RS

232 interface, connect the RS 232 interface of the PC (or an

interface converter) with a suitable 9-pin connection cable to

the sub D plug connector on the front of the device.

WARNINGWARNING

WARNING

High voltage, when the CT lines are disconnected and the

transformer is operating.

4.34.3

4.3

CT Input (Secondary CurrCT Input (Secondary Curr

CT Input (Secondary Curr

ent Tent T

ent T

ansformer)ansformer)

ansformer)

Connect the lines of the CT transformer to

terminals 15 and 16.

If the EPT202 is equipped with a split core

transformer, then it must also be connected

to terminals 15 and 16.

This input can be deactivated during

parameter assignment so that only the oil

temperature is indicated, for example.

15 16

Brand	MESSKO
Model	MTeC EPT202
Category	Thermometer
Language	English

MESSKO MTeC EPT202 User Manual

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MESSKO MTeC EPT202 Specifications