Eaton MTL 9492-PS-PLUS User manual

MTL 9492-PS-PLUS
Intrinsically safe power supply
January 2022
INM MTL 9492-PS-PLUS Rev 3
Instruction manual
MTL intrinsic safety solutions

ii INM MTL 9492-PS-PLUS Rev 2
DECLARATION OF CONFORMITY
A printed version of the Declaration of Conformity has been provided separately within the
original shipment of goods. However, you can find a copy of the latest version at
http://www.mtl-inst.com/certificates

iii INM MTL 9492-PS-PLUS Rev 2
CONTENTS
DECLARATION OF CONFORMITY ................................................II
GENERAL SAFETY INFORMATION .............................................. IV
1 FEATURES ...................................................................1
2 DESCRIPTION ..............................................................1/2
3 DIN-RAIL INSTALLATION METHOD ...............................................3
3.1 Protection of equipment ......................................................................3
3.2 DIN rail mounting............................................................................3
3.2.1 Mounting power supplies on DIN rail .......................................................4
3.2.2 Wiring up power supplies.................................................................4
3.2.3 Ambient temperature considerations .......................................................5
3.3 Power bus - Installation and use................................................................5
3.4 Earth rail and tagging accessories ..............................................................6
3.4.1 Parts list ...............................................................................6
3.5 Assembly ...................................................................................8
3.5.1 Fitting earth rails ........................................................................8
3.5.2 Fitting tagging strips .....................................................................8
3.5.3 Completed assemblies ...................................................................9
4 BACKPLANE MOUNTING VARIANT..............................................10
4.1 Accessories ................................................................................10
4.2 Protection of equipment .....................................................................10
4.3 Backplane mounting ........................................................................10
4.3.1 Surface mounting – with kit SMS01 .......................................................12
4.3.2 T- or G-section DIN-rail mounting –with kit DMK01 ...........................................12
4.4 Backplanes – identification and tagging ........................................................12
4.4.1 Backplane identification labels............................................................12
4.4.2 Tagging strip mounting kit (TSK08) ........................................................12
4.5 Backplanes - earth rails ......................................................................14
4.5.1 Earth rail kit (ERK08) ....................................................................14
4.6 Backplanes – power supply connections ........................................................14
4.6.1 Single backplane .......................................................................14
4.6.2 Interconnection of power supplies for multiple backplanes ....................................14
4.7 Fitting MTL 9492-PS-PLUS modules to backplane ................................................14
4.7.1 Installation- Figure 4.15..................................................................14
4.7.2 Module removal- Figure 4.16 .............................................................14
5 ENVIRONMENTAL ............................................................16
6 WASTE REMOVAL INFORMATION ...............................................16
7 APPROVALS .................................................................16
8 ATEX, UKEX & IECEX CERTIFICATION INFORMATION ...........................17/18

iv INM MTL 9492-PS-PLUS Rev 2
GENERAL SAFETY INFORMATION
Safety instructions for installation and operating personnel
The operating instructions provided here contain essential safety instructions for installation personnel
and those engaged in the operation, maintenance and servicing of the equipment.
WARNING !
A ‘WARNING’ marked in this way is provided for operator and plant safety and MUST be followed.
CAUTION !
A Caution is provided to prevent damage to the instrument.
NOTE
These are used to guide the user in the operation of the instrument.
Before commencing installation or commissioning:
• Read and understand the contents of this manual
• Ensure installation and operating personnel have received adequate training for this task
• Ensure that any operating instructions are fully understood by the personnel responsible.
• Observe national and local installation and mounting regulations (e.g. IEC 60079-14).
WARNING !
These assemblies may not be used in explosion-hazard area applications if they have been used
previously in general electrical installations.
WARNING !
The responsibility for planning, installation, commissioning, operation and maintenance, particularly
with respect to applications in explosion-hazard areas, lies with the plant operator.
During operation:
• Make the relevant instructions available at all times to the operating personnel.
• Observe safety instructions.
• Observe national safety and accident prevention regulations.
• Operate the equipment within its published specification.
• Servicing, maintenance work or repairs not described in this manual must not be performed without
prior agreement with the manufacturer.
• Any damage to this equipment may render its explosion protection null and void.
• No changes to any of the components that might impair their explosion protection are permitted.
If any information provided here is not clear:
Contact Eaton’s MTL product line or an authorised distributor or sales office.
NOTE
Improper installation and operation of the enclosure can result in the invalidation of the guarantee.

1INM MTL 9492-PS-PLUS Rev 2
1 FEATURES
• Isolated power supply
• Zone 2 mountable
• DIN-rail or backplane mounting
• ATEX / UKEX / IECEx approvals
• 480mA @10.0V DC- Ex ia IIB output
• 550mA @11.9V DC- Ex ib IIB output
• Power over Ethernet option (PoEx)*
• Multiple outputs achieved by ganging MTL 9492-PS-PLUS modules using 24V DC
power distribution backplane
*Note – PoEx is a simple adaptation of the IEEE 802.3af Power over Ethernet (PoE)
standard to bring the benefits to the 9400 Range of Hazardous Area devices.This
allows two spare pairs in the existing Cat5e cable to distribute the power supplied
to a 9466 Ethernet Switch (Power Sourcing Equipment – PSE) to each of the devices
connected to its five ports (PD – Powered Device). This adaptation is necessary due to
restrictions for Hazardous Area use. It is not implied that the device conforms to the
802.3af (PoE) standard.
2 DESCRIPTION
The MTL 9492-PS-PLUS Power Supply is the recommended method for supplying the MTL 9460-
ET series of intrinsically safe Ethernet modules and is based on an isolating power supply. It takes
a 24V DC safe area / Zone 2 supply and produces an intrinsically safe, 12V DC nominal output
capable of powering any one of the MTL 94xx Series Ethernet modules mounted in a Zone 1
hazardous area. The MTL 9492-PS-PLUS may be mounted in a safe area, Zone 2 hazardous area.
The output can be from either the Ex ia IIB or Ex ib IIB output connectors depending upon
application. The ‘ib’ IIB output providing a higher useable output power where the Gas Group
and Zone allows. See Figures 2.1 and 2.2 for connection details.
MTL 9492-PS-PLUS IS Power Supply