Bosch Rexroth M SED 6 VE1 Series, Manual

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Hydraulics Bosch Rexroth AG RA 22049-VE1-B1 M-.SED 6...VE1...
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Electrical connection
Circuit diagram
Direct voltage, polarity-independent
+(–)
– (+)
Over-current fuse and switch-off voltage peak
Important:
Corresponding to the rated current, a fuse according to
IEC 60127 and/or UL 248-14 has to be connected ahead
of every solenoid coil (max. 3 x I rated current). The shut-
off threshold of the fuse has to match the prospective short-
circuit current of the supply source. The prospective short-
circuit current of the supply source may amount to a maxi-
mum of 1500 A.
This fuse may only be fitted outside the explosive area or
must be of an explosion-proof design. When inductivities are switched off, voltage peaks result
which may cause failures in the connected control electron-
ics. For this reason, the valve solenoids comprise a suppres-
sion circuit which dampens this voltage peak to the voltage
value shown in the table.
Prescribed external miniature fuses according to IEC 60127
Voltage data in
the valve type
code
Nominal
voltage valve
solenoid
Rated current
valve solenoid
Rated current
(fuse)
Rated voltage
(fuse)
Maximum
voltage value
upon switch-off
Suppression
circuit
G24 24 V DC 0.708 A DC 800 mA 250 V –90 V
Bi-directional
suppressor
diode
G110 110 V DC 0.155 A DC 200 mA 250 V –390 V
Notice : Time current characteristic of the external miniature fuse: Fast acting (F) according to IEC 60127.
Prescribed external miniature fuses according to UL 248-14
Voltage data in
the valve type
code
Nominal
voltage valve
solenoid
Rated current
valve solenoid
Rated current
(fuse)
Rated voltage
(fuse)
Maximum
voltage value
upon switch-off
Suppression
circuit
G24 24 V DC 0.708 A DC 1 A 250 V –90 V
Bi-directional
suppressor
diode
G110 110 V DC 0.155 A DC 200 mA 250 V –390 V
Notice : Time current characteristic of the external miniature fuse: Fast acting (F) according to UL 248-14.