Siemens ISI EN 50295 - Manual (Page 101)

Siemens IK PI · 2004 6/101
AS-Interface Slaves
Modules with special functions
Earth fault detection modules
6
■
Technical specifications
1) U
Aux
should be protected with a slow-action 2 A fuse.
2) For increasing the relay endurance with inductive loads,
a protective circuit with free-wheeling diodes is recommended.
Earth fault detection module
With screw-type terminal connection With Cage Clamp terminal connection
3RK1 408-8KE00-0AA2 3RK1 408-8KG00-0AA2
Total current input in mA £ 40
Polarity reversal protection Built-in
Earth fault 10% U
AS-i
£ U
GND
£ 90% U
AS-i
Low signal range
• I
IN
in mA £ 1.5
High signal range
• U
IN
in V ³ 10
• I
IN
in mA ³ 6
Current carrying capacity 1 )
• DC 12 in A 1 (max. 2 per module)
• DC 13 in A 500 (24 V) 2 )
• DC 13 in mA 200 (48 V) 2 )
Operating cycles DC 12 2 ´ 10 6
Rated operating voltage range in V 24 to 48 DC
Degree of protection IP20
Dimensions (H x W x D) in mm 102 ´ 22.5 ´ 92
Rated temperature in °C 25
Ambient temperature in °C -25 to +70
Storage temperature in °C -40 to +85
Addressing The module does not require an individual AS-Interface address
Connection Screw-type terminal connection Spring-loaded terminal connection
Conductor cross-sections in mm 2
• Solid -- 2 ´ (0.25–1.5)
• Finely stranded with end sleeve -- 2 ´ (0.25–1)
• Finely stranded without end
sleeves
-- 2 ´ (0.25–1.5)
• AWG conductors,
solid or stranded
-- AWG 2 ´ (24–16)
Note If repeaters are used, each AS-Interface segment needs its own earth fault detection module
(number of AS-Interface power supply units = number of earth fault detection modules)