MMT 230 Series Instruction Manual

Safety level switch low level

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ISO 9001

M . M . T . s.r.l.

www.mmtitalia.com

Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc

Instruction manual

Safety level switch

Low level

Series 230

v. 4.01

MMT srl

www.mmtitalia.com

Capralba (CR) - Italy

[Maggio 2023]

26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728

e-mail: info@mmtitalia.com

pag. 1/23

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Summary of Contents for MMT 230 Series

Page 1 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc Instruction manual Safety level switch Low level Series 230 v. 4.01 MMT srl www.mmtitalia.com Capralba (CR) - Italy [Maggio 2023] © 2005 – 2008 M.M.T. Srl pag. 1/23...
Page 2 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc Series 230 Instruction Manual Index 1 - Description 2 - Technical characteristics of the level switch 230 3 - Technical characteristics of the probe 800 4 - General Safety information 4.1 - probe...
Page 3 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc INSTRUCTION MANUAL - English Safety accessory for minimum level, series 230 + 800. Code: 230-210-1Z Electronic self-testing conductivity level switch SIL3...
Page 4 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc The level switch can be installed on the panel door of the cabinet, using the provided accessory kit, which includes a rubber gasket, a frame and 2 fixing crews.
Page 5 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 3- Technical characteristics of the 800 probe - threaded connection: W=0 →...
Page 6 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 4 - General Safety information Safe use of the product depends on correct installation. All necessary operations and interventions on this machine must be performed by a qualified technician, according to the operating instructions.
Page 7 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 5 - Installation On the probe label there is "with electronic switch □ 230 / □ 231". Please tick using a permanent marker the appropriate level switch code used with the probe, in order to identify the set used once the system is installed.
Page 8 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc The probe with electrode can now be assembled permanently onto the boiler. Interpose the included copper gaskets.
Page 9 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 5.2 - Level switch installation The level switch must always be inserted in a suitable industrial electric cabinet, with appropriate protection from the environment, or in a fireproof enclosure, with an IP code IP4X or superior.
Page 10 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 5.4 - Push buttons usage In the bottom part of the front panel, there are 4 push buttons available. Their function is as follows. - LA (Last Alarm): when kept pressed, the display shows the latest alarm code since the last time the level switch was powered.
Page 11 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc The user will have to use appropriate protection against discharge, depending on the load connected to the contacts themselves, in accordance with EN 12953-9, item 4.4.3.4.
Page 12 ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 6.1 - Troubleshooting Alarm code 1 Verify that the level of the water is indeed below the minimum required. If the level is above, and the alarm continues, verify that the conductivity of the water in the boiler is in the conductivity range of the used level switch (see label).
Page 13: Safety Manual - Sil
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 6.2 - Example of connection: A typical example of work for the series 230 is the following: 7 - Maintenance The level switch does not require particular maintenance or service.
Page 14: Safety Level Controller 230/231 + Probe 800 Up To Sil 3 In Single (1Oo1) Module/Probe Configuration
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc SAFETY MANUAL – SIL Safety Level Controller 230/231 + probe 800 up to SIL 3 in single (1oo1) module/probe configuration ©...
Page 15: Table Of Contents
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc Summary SAFETY MANUAL – SIL ............................13 Safety Level Controller 230/231 + probe 800 up to SIL 3 in single (1oo1) module/probe configuration ..
Page 16: Manufacturer Information
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 1. Manufacturer Information M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY Via degli Artigiani, 56 tel.
Page 17: Intended Use
De-activating or bypassing safety functions causing impairment of safety functions may cause injuries to property, environment or persons for which MMT Srl will not be liable. Failure in application of advice given in this manual causing impairment of safety functions may cause injuries to property, environment or persons for which MMT Srl will not be liable.
Page 18: Relevant Standards And Directives
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 3.3 Relevant Standards and Directives 3.3.1. Device specific standards and directives The devices are developed, manufactured and tested according to the relevant safety standards and applicable Directives.
Page 19: Special Consideration On (Sff) Safe Failure Fraction
The device under consideration is intended to be a part of a safety loop and, according to the chosen safety chain can be or cannot be a complete element or subsystem, depending on the (sub)system it is included in. Contact MMT experts in case of any doubts on SFF calculation constraints. 5 Assumptions 5.1 Configuration...
Page 20 ºC. For a higher average temperature up to 55 ºC, the failure rates should be multiplied with an experience based factor of 2.5. A similar multiplier should be used if frequent temperature fluctuation must be assumed. Contact MMT in case of installation in harsh environment. •...
Page 21: Safety Function And Safe State
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 6 Safety Function and Safe State The safe state is defined as the outputs being de-energized. The output status depends on the user free choice of the contact (Normally Open o Normally Closed) in the de-energized status.
Page 22: Installation And Commissioning
Early failures are cleaned by means of the burn-in procedure actuated by MMT for every piece produced and therefore the assumption of a constant failure rate during the useful life time is valid if the useful lifetime is not exceeded.
Page 23: Abbreviations
ISO 9001 M . M . T . s.r.l. 26010 CAPRALBA (CR) - ITALY - Via degli Artigiani, 56 tel. 0373 450595 - fax. 0373 450728 www.mmtitalia.com e-mail: info@mmtitalia.com Man_E_230_21y_0z_man_s2.8x_rev0_SIL3.doc 12 Abbreviations  Beta common cause fraction d Beta common cause fraction of the part of the system covered by the diagnostic ...

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