Bosch Rexroth VT-MRMA1-1, Руководство по эксплуатации

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Troubleshooting 45/52
RE 30214-B/03.2019, VT-MRMA1-1, Bosch Rexroth AG
14 Troubleshooting
14.1 How to proceed for troubleshooting
• Always act systematically and focused, even under pressure of time. Random and
imprudent disassembly and changing of settings might result in the inability to
ascertain the original cause of fault.
• First obtain a general overview of how your product works in conjunction with the
entire system.
• Try to determine whether the product worked properly in conjunction with the
entire system before the troubles occurred.
• Try to determine any changes of the entire system in which the product is
integrated:
– Were there any changes to the product’s operating conditions or operating range?
– Were there any changes (e.g. retrofit) or repairs carried out on the complete
system (machine/system, electrics, control) or on the product?
If yes: Which?
– Was the product or machine used as intended?
– How becomes the malfunction apparent?
– Try to get a clear idea of the error cause. If possible, ask the direct (machine)
operator.
14.2 Erroneous states and error diagnostics
Various monitoring functions are active in the amplifier module.
When no error is present
• the green “ready” LED is ON
• 24 V operating voltage is applied to the “ready” output (terminal 10)
In the event of a fault, the fault detection feature provides information on the
possible causes of the fault:
Fault detection for Fault Effect Remedy
Pressure command value
cables (2 cables) Cable break (at 0...10 V
input) Output stage switches off Replace cable
"Ready for operation“ and, if applicable,
"Position command value reached“ become
inactive (0 V)
Cable break or short-circuit
(at 4...20 mA input) The green “ready” LED is OFF Replace cable
Check pressure command
value connections
Pressure switch signals A or B becomes
inactive