MTL Instruments MTL1211 Data sheet

DRAFT - 03 August 2017

Technical data

MTL signal conditioners

MTL1211 switch /
proximity detector

with line fault detection

The MTL1211 is a single channel switch or
proximity detector isolator with the option to
select line fault detection or a repeat output.
Switches are used to select phase reversal or the
repeat output.

Power for this module is supplied via the power
bus embedded in the DIN rail in conjunction with
the power bus accessories.

Terminals Function

1 Input (+)

2 Input (-)

5 Output

6 Output

August 2017
EPS1211 rev 3

Terminals Function

680Ω

22kΩ

7 Repeat Output / LFD alarm

8 Repeat Output / LFD alarm

D Power supply -ve

E Power supply +ve

MTL1211

+

_

On

LFD PR

+24V

Output

Repeat/LFD

SPECIFICATION

See also common specification

Number of channels

Location of equipment

Input signal

Voltage to sensor

Input/output characteristics

Relay characteristics

Response time

Line fault detection (LFD) when used

LED indicators

Power supply voltage.

Maximum current consumption

Power dissipation within unit

Isolation

One, with fully floating input and outputs

Safe area

Dry contact or inputs conforming to BS EN60947-5-6:2001, standards for proximity detectors (NAMUR)

7-9V dc from 1kΩ ±10%

Normal Phase - Output closed if input >2.1mA (<2kΩ in input circuit), Output open if input <1.2mA (>10kΩ in
input circuit). Hysteresis 200µA (650Ω nominal)

Contact rating: 250V ac, 2A cosØ >0.7, 340V dc, 2A resistive load

20mS

User selectable via switches on the side of the unit. Line faults are indicated by an LED. The Output relay is

de-energised if an input line fault is detected.

Open-circuit alarm on if Iin <50uA, Open-circuit alarm off if Iin >250uA

Short-circuit alarm on if Rin <100Ω, Short circuit alarm off if Rin >360Ω

Note: resistor must be fitted when using LFD with contact inputs 500Ω to 1kΩ in series with the switch and

20kΩ to 25kΩ in parallel with the switch.

Green: power indication, Yellow: Channel status, on when relay energised Red: LFD status, on when line fault
detected

18V to 32V DC

16mA at 24V dc

0.4W at 24V

250V ac or dc functional isolation between power, field and system circuits. (Tested to 1100Vac)
1500V between relay contacts and other circuits

Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: [e-mail]
www.mtl-inst.com

© 2017 Eaton
All Rights Reserved
Publication No. EPS 1211 rev 3 030817
August 2017

1

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The given d ata is only intended as a p roduct
descrip tion and sho uld not be reg arded as a legal
warrant y of properties or gu arantee. In t he interest
of further technical developments, we reserve the
right to make de sign changes.