Safety instructions 9/52
RE 30214-B/03.2019, VT-MRMA1-1, Bosch Rexroth AG
WARNING
Hazardous movements!
Risk of injury due to incorrect activation of the proportional pressure reducing valve
via the analog amplifier module and resulting unforeseeable machine movements.
▶ Operate the amplifier only together with the valves specified in the type code.
▶ Observe safety in accordance with EN 13849 or IEC 62061.
▶ If persons have to enter the hazard zone while the control is active, provide
superordinate monitoring functions or measurers for personal safety. The plant
manufacturer/user has to rate and dimension these measures on the basis of
a risk and failure analysis according to the specific situation on site. The safety
regulations valid for the system have to be taken into account for this.
▶ The electronics emits interference to other electronics within the permitted limit
values. This can cause malfunction in the control process. Only use electronics
below the EMC limit values or provide appropriate shielding.
▶ The electronics of the analog amplifier module VT-MRMA1 responds to
electromagnetic interference from non-shielded, improperly installed or wrongly
connected signal cables. If the limit values given in the data sheet are exceeded,
malfunction or uncontrolled movements are possible. Adhere to the limit values
given in the data sheet, use only electronics below the EMC limit values or
provide proper shielding.
▶ Electrostatic processes, an inadequate grounding concept or missing
equipotential bonding can lead to damage to the electronics and hence
cause malfunction or uncontrolled movements of the machine. Ensure proper
grounding and provide equipotential bonding.
▶ Using the product outside the specified IP protection class can result in
short-circuit and malfunction and hence in uncontrolled machine movements.
Therefore, use the product only within the IP protection class and in
environments as specified in the data sheet.
▶ Provide safety functions for personal safety separately. The analog amplifier
module VT-MRMA1 itself does not include safety functions for personal safety
and is no safety-related component.
High electric voltage through incorrect connection!
Danger to life, risk of injury due to electric shock.
▶ When carrying out any work, disconnect the relevant machine section from the
power supply and protect it against being switched on again.
▶ Only connect devices, electrical components and lines which feature protective
extra low voltage (PELV) to connections or terminals having voltages from 0 to
50 Volt.
▶ Only connect voltages and power circuits that feature safe isolation from
dangerous voltages. Safe electrical isolation can be achieved with, for example,
isolating transformers, safe opto-couplers or mains-free battery operation.
