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24V dc Supply
PSD24Ex
(Used in all Racks)
The power supply unit PSD24Ex is
designed to power the excom® system and is sufficient for a fully assembled
system. The power supply features a protection type combining EEx m, EEx e
and EEx i and can thus be installed in Zone 1. Power supplies are integrated
into protective aluminium housings and are fully encapsulated.
If the system is configured with redundant power supplies, a defective power
supply may be removed from the rack for replacement during operation (provided
module rack MT18-R024 is used). The PSD24Ex provides a supply voltage of 18...32
VDC.
Connection of the external supply is established via Exe terminals. It is not
permitted to access live terminals of this kind. They are located under a
protective cap and may only be accessed after suspending the power supply.
Redundancy:
Two power supplies may be used. If one of the devices or the incoming line
fails, the second power supply immediately takes over the supply of the entire
system. It is possible to use different potentials for supply.
Type
PSD24Ex
● DC power supply unit for supply of a fully assembled module rack
● Redundant operation possible
● Protection type EEx m, EEx e, EEx i
● Supply of up to 128 binary or 64 analogue inputs/outputs
● Aluminium housing
● Complete encapsulation
Connections:
● Via module rack |
230Vac & 115Vac
Supply
PPSA230Ex / PPSA115Ex
This module is in addition to PSU24/Ex (if reqd)
The pre-power
supply unit PPSA230Ex / PPSA115Ex
serves to supply the Excom system. The unit is designed for use in the special
backplane MT..-.230. This backplane has additional slots to accommodate the
pre-power supplies. The pre-power supply is the line-side device prior to and in
addition to the standard power supply PSD24Ex.
The unit operates as an AC / DC converter with a
nominal voltage input 230 VAC (115 VAC).
Connection to the external supply is established via
EEx e terminals. It is not permitted to access live
terminals of this kind. They are located under a
protective cap and may only be accessed after
suspending the power supply. It is also not allowed to
separate live units. Removal of the fastening screw is
only permitted when de-energised.
Type
PPSA230Ex PPSA115Ex
Ident-no.
6900293
6900294
Max. voltage in
230 VAC 115 VAC
Max. power input 75
VA
75 VA
Max. voltage out
32 VDC
32 VDC
Max. power output 60 W
60 W
Ex
approval
PTB 04 ATEX 2047
Marking
II 2 G EEx e m IIC T4
- Um
250 V
Degree of protection IP50
Operating temperature -20 ... +70 °C
Relative humidity
95% at 55 °C acc. to EN 60069-2
Vibration testing acc. to IEC 68-2-6
Shock testing acc. to
IEC 68-2-27
Mounting flange
4 x M4 screws (torx)
Dimensions
45 x 155 x 106 mm
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