2
100
165
182
89
7
8TE (40,3)
3HE (128,4)
t
W
I
B
I
A
0 ... ± 6 V
mV = mA
mV = mA
VT 30XX
w1
H1
w2
H2
w3
H3
w4
H4
H11
H1
2
Hydraulics
Bosch Rexroth AG
RE 29935/10.12 VT 3000
7
/8
Unit dimensions
(Dimensions in mm)
Engineering notes / maintenance instructions / supplementary information
– The amplifier card may only be plugged in or unpluged when switched off.
– Do not use plugs with free wheel diodes or LED displays when connecting the solenoids.
– Only carry out measurements on the cards with instruments
R
i
> 100 kΩ.
– Measuring zero (M0) is raised by +9 V compared to 0V operating voltage and is not potentially separated, i.e. –9 V
controlled voltage is equivalent to 0V operating voltage. Therefore do not connect measuring zero (M0) to 0V operating
voltage.
– When switching command values use relays with gold contacts (small voltages, small currents).
– When switching card relays only use contacts with a loadability of approx. 40 V, 50 mA.
When controlling externally the control voltage may have a maximum residual ripple of 10 %.
– Always screen command value lines; connect screen to 0 V operating voltage on the card side, other side remains open
(danger of earth loops).
Recommendation: Also screen solenoid lines.
Use cable type LiYCY 1.5 mm
2
for solenoid lines of up to 50 m in length.
For longer lengths please consult us.
– Minimum distance to arial lines, radio sources and radar equipment must be at least 1m.
– Do not lay solenoid and signal lines near power lines.
– Because of the loading current of the smoothing capacitor on the card pilot fuses must be slow.
–
Note:
When using the differential input both inputs must always be switched on or off simultaneously.