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D5202S
- 4 A, 24 Vdc, SIL 3 Power Distribution and Diagnostic Module
G.M. International ISM0177-4
Warning
Operation
The D5202S is used to protect the power system by limiting the maximum supply current for a set of D5000 modules connected via Power Bus.
It is also capable of repeating the common fault signal from the Power Bus via a SPDT relay.
For single power supply, 3 LEDs are present to monitor line presence, supply fault (supply voltage out of 25% variation), common bus fault.
For redundant power supply, 5 LEDs are present to monitor two line presences, two supply faults (supply voltage out of 25% variation for each supply source), common bus fault.
2 SPDT relay contacts provide remote alarming for the above mentioned failures.
In case of fault of one supply source the D5202S exchanges to the working one using an ideal diodes circuit.
Installation
D5202S is a power distribution and diagnostiv module housed in a plastic enclosure suitable for installation on T35 DIN-Rail according to EN50022.
D5202S unit can be mounted with any orientation over the entire ambient temperature range.
Electrical connection of conductors up to 2.5 mm² are accommodated by polarized plug-in removable screw terminal blocks which can be plugged in/out into a powered unit without
suffering or causing any damage
(for Zone 2 installations check the area to be nonhazardous before servicing).
The wiring cables have to be proportionate in base to the current and the length of the cable.
On the section “Function Diagram” and enclosure side a block diagram identifies all connections.
Identify the function and location of each connection terminal using the wiring diagram on the corresponding section, as an example (redundant power supply configuration):
For Power Supply 1 (20÷30 Vdc source): connect (+) positive pole at terminal “9” and (-) negative pole at terminal “10”.
For Power Supply 2 (20÷30 Vdc source): connect (+) positive pole at terminal “11” and (-) negative pole at terminal “12”.
Use Power Bus and DIN-Rail accessories (described on pag. 3) to connect D5202S module to Power and Fault Bus.
For 1oo2 Power Fault output (see description of the power supply diagnostic functionality on pag. 5):
- use terminal “5” and “6” as NO contact (Normally Open when relay is de-energized);
- use terminal “5” and “7” as NC contact (Normally Closed when relay is de-energized).
For Common Fault output (see description of the cumulative fault diagnostic functionality on pag. 6):
- use terminal “1” and “2” as NO contact (Normally Open when relay is de-energized);
- use terminal “1” and “3” as NC contact (Normally Closed when relay is de-energized).
Installation and wiring must be in accordance to the relevant national or international installation standards (e.g. IEC/EN60079-14 Electrical apparatus for explosive gas atmospheres
Part 14: Electrical installations in hazardous areas (other than mines)), make sure that conductors are well isolated from each other and do not produce any unintentional connection.
Connect SPST relay contacts checking the load rating to be within the contact maximum rating (5 A 250 Vac 1250 VA, 5 A 250 Vdc 175 W (resistive load)).
To prevent relay contacts from damaging, connect an external protection (fuse or similar), chosen according to the relay breaking capacity diagram on data sheet.
The enclosure provides, according to EN60529, an IP20 minimum degree of mechanical protection (or similar to NEMA Standard 250 type 1) for indoor installation, outdoor installation
requires an additional enclosure with higher degree of protection (i.e. IP54 to IP65 or NEMA type 12-13) consistent with the effective operating environment of the specific installation.
Units must be protected against dirt, dust, extreme mechanical (e.g. vibration, impact and shock) and thermal stress, and casual contacts.
If enclosure needs to be cleaned use only a cloth lightly moistened by a mixture of detergent in water.
Electrostatic Hazard: to avoid electrostatic hazard, the enclosure of D5202S must be cleaned only with a damp or antistatic cloth.
Any penetration of cleaning liquid must be avoided to prevent damage to the unit. Any unauthorized card modification must be avoided.
Relay output contact must be connected to load non exceeding category II overvoltage limits.
Warning: de-energize main power source (turn off power supply voltage) and disconnect plug-in terminal blocks before opening the enclosure to avoid electrical shock
when connected to live hazardous potential.
Start-up
Before powering the inputs of unit check that all wires are properly connected, also verifying their polarity. Check conductors for exposed wires that could touch each other causing
dangerous unwanted shorts. Please, see pag. 5 and 6 for each functionality of the D5202S module.
D5202S is an electrical apparatus installed into standard EN50022 T35 DIN-Rail located in Safe Area or Zone 2, Group IIC, Temperature Classification T4, Hazardous Area
(according to EN/IEC60079-15) within the specified operating temperature limits Tamb - 40 to +60 °C.
D5202S must be installed, operated and maintained only by qualified personnel, in accordance to the relevant national/international installation standards (e.g. IEC/EN60079-14
Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines)), following the established installation rules.
De-energize power source (turn off power supply voltage) before plug or unplug the terminal blocks when installed in Hazardous Area or unless area is known to be nonhazardous.
Warning: substitution of components may impair Intrinsic Safety and suitability for Zone 2.
Warning: de-energize main power source (turn off power supply voltage) and disconnect plug-in terminal blocks before opening the enclosure to avoid electrical shock
when connected to live hazardous potential
.
Explosion Hazard: to prevent ignition of flammable or combustible atmospheres, disconnect power before servicing or unless area is known to be nonhazardous.
Failure to properly installation or use of the equipment may risk to damage the unit or severe personal injury.
The unit cannot be repaired by the end user and must be returned to the manufacturer or his authorized representative.
Any unauthorized modification must be avoided.
