RE 30232-02-B, Edition 02.2021, Bosch Rexroth AG
Mounting | Valve amplifier VT-MSPA2-2X 15/36
2. Snap the back panel of the VT-MSPA2-2X carefully into position on the DIN
mounting rail. Mechanical contact points on the rear panel of the VT-MSPA2-2X
ensure firm seating on the DIN mounting rail and the connection of the housing
to the grounding system of the control cabinet.
Fig. 1: Mounting the VT-MSPA2-2X on a DIN mounting rail
Should the spring-loaded latch not snap open automatically, it can be released
using a screwdriver (see Fig. 1 on the right). After having positioned the latch, let
it spring back into the engaged position.
Observe the following when connecting the VT-MSPA2-2X:
▶ For mounting, observe the notes on applicable standards and operating
conditions in data sheet RE 30232-02.
▶ Do not use connectors with free-wheeling diodes or LED lamps for connecting
solenoid cables to the valve!
▶ Use low-capacitance cables.
▶ Whenever possible, execute cable connections without intermediate terminals.
▶ Install sensor cables separately.
▶ When sources of electromagnetic disturbance are used (e.g. frequency
converter), malfunction may occur. Avoid the installation of the VT-MSPA2-2X in
the direct vicinity to sources of disturbance.
▶ The distance to aerial lines, radio sources and radar equipment must be at
least 1 m.
▶ Do not lay signal cables near power cables.
▶ The system ground is an essential, integral part of EMC protection of the
VT-MSPA2-2X. Here, interference, which is transported to the VT-MSPA2-2X
via data and voltage supply cables, is dissipated. This function can only be
ensured, if the system ground itself does not inject interference into the control
electronics.
7.5 CONNECTING THE SUPPLY VOLTAGE
1. Disconnect the relevant system part from the power supply.
2. Inspect all cables for intactness.
3. Connect the signal and solenoid cables according to your circuit diagram to the
relevant terminals of the VT-MSPA2-2X.
4. Connect the supply voltage and check the presence of voltage by switching on.
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