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5/166 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
Electronic Protection Devices for use behind 24 V DC Switch Mode Power Supplies

Operating data
Operating voltage UB 24 V DC (18...32 V)
Current rating IN fixed current ratings: 0.5, 1, 2, 3, 4, 6, 8, 10, 12 A
5
Closed current I0 ON condition: typically 20...30 mA depending on signal output
Staus indication by multico- Green - unit is ON (S1 = ON)
means of lour LED - load circuit/Power-is switched on MOSFET
EPD
Orange - in the event of overload or short circuit until electronic
disconnection
Red - unit electronically disconnected
- load circuit/Power-MOSFET OFF
- undervoltage (UB < 8 V)
- after switch-on till the end of the delay period
OFF - manually switched off (S1 = OFF) or device is dead
potential-free auxiliary contact F
ON/OFF/condition of switch S1

Load circuit
Load output Power-MOSFET switching output (high slide switch)
Overload disconnection typically 1.1 x IN (1.05...1.35 x IN)
Short-circuit current IK active current limitation (see table 1)
Trip time see time/current characteristics
For electronic disconnection typically 3 s at ILoad > 1.1 x IN
typically 100 ms...3 s at ILoad > 1.8 x IN (or 1.5 x IN/1.3 x IN, )
Temperature disconnection internal temperature monitoring with electronic disconnection
Low voltage monitoring load output with hysteresis, no reset required: load »OFF« at UB< 8 V
Starting delay tStart typically 0.5 sec after every switch-on and after applying US
Disconnection of load circuit electronic disconnection
Free-wheeling circuit suitable external free-wheeling circuit to be used
with inductive load
Several load outputs must not be connected
in parallel

Signal output F
Electrical data potential-free auxiliary contact max. 30 V DC/0.5 A,
min. 10 V DC/10 mA
ON condition LED green voltage UB applied, switch S1 is in ON position no overload,
no short circuit
OFF condition LED off device switched off (switch S1 is in OFF position)
no voltage UB applied
Fault condition LED orange overload condition > 1.1 x IN up to electronic disconnection
Aux. contact single signal, make contact
contact open, terminal 13-14
Fault signal output fault conditions
- no operating voltage UB
- ON/OFF switch S1 is in OFF position
- red LED lighted (electronic discon nection)