Installation 53/132
RE 30201-B/07.2014, SYEPS series 1X,
Bosch Rexroth AG
Fig. 27: Mating connector with central screw
1
Rubber seal
2
Contacts
3
Apply threadlocker
Important note!
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Do not forget to carry out a short-circuit check!
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Make sue that cables and screw-type terminals are tightened (no loose contacts)
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Make sure that the rubber seal is present under the housing.
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To prevent the connector from loosening by vibration, secure the central screw by
means of a threadlocker (e. g. Loctite 242/243). Apply 1 - 2 drops to the end of
the thread and mount the connector on the pilot valve (MA = 0.5 Nm). Make sure
that the adhesive does not get into the contacts of the connector.
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Tighten the central screw.
7.5.5.1 Wiring of the on/off valve
An on/off valve cannot be activated directly by the HNC100, because the outputs do
not provide sufficient electric power. The necessary power can be made available in
two different ways:
The plug-in amplifier comprises power electronics in the Z4 plug-in connector, which
energizes and de-energizes the solenoid of the on/off valve in a wear-free manner.
More detailed information on the plug-in amplifier can be found in 30262.
Plug-in switching amplifier
Recommended amplifier: R901290194
HP - accumulator charging
Fig. 28: Installation of a plug-in amplifier
For this solution you require a 24-V relay, which is able to switch a current of 2.5 A.
In addition, free-wheeling diodes or suppressor diodes must be provided across the
switching contacts in order to prevent electric arcs while switching off, which would
destroy the contacts within a very short time. The control coil is actuated via the
24-V output of the HNC100.
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2
3
Plug-in switching amplifier
Relays with free-wheeling
diodes
