Vibro-meter 204-040-100-115

Description

Vibro-meter 204-040-100-115
When a VM600 is part of a safety related system (SRS), certain configuration restrictions
must be applied. In particular:
• The output relays must be configured as de-energized to trip. Specifically:
• the relay is energized when the monitored levels are within their specified tolerances
• the relay is de-energized to indicate an alarm.
• The use of the VM function danger bypass is not allowed.
• The use of the VM function trip multiply is not allowed.
• The alarm must be defined as ‘latching’.
Valid Safety Configurations
The VM600 machinery protection system (MPS) can be configured in many different
arrangements. These configurations are described in more detail in the hardware manual
(see 1.5 – Applicable Documents). For example, the VM600 can be used to protect rotating
machines in a safety related system.
The system shall be installed following the procedures described in the MPS Hardware
Manual (Standard Version) MAMPS-HW/E (see 1.5 – Applicable Documents). Environmental
restrictions are described in Appendix A of the manual.
3.9 Configuring the System
It is important that the levels (vibration and so on) are adjusted to suit the system under
protection and that a manual verification is made of the parameters that are uploaded to the
system (MPC4 card).

Note that the procedures described should only be performed by competent and authorized
personnel following the plant specific guidelines in force at the installation site.
Define the levels
The choice of alarm levels must be made in consultation with the site manager. It is the end
user’s responsibility to ensure that the alarm levels are appropriate for the particular system
being protected.
The levels are defined using the MPS1 software (supplied) or the MPS2 software (optional).
Please refer to the appropriate documentation for complete information.
Define the alarm outputs
Any relay on the MPC4 or RLC16 cards can be configured to provide the safety function. As
previously noted, the alarms must be:
• configured as ‘latching’
• de-energized to ‘trip’.
Upload the levels and configuration
Once the system parameters have been correctly defined using the MPS software, the
configuration for each MPC4 card must be uploaded to the card. This procedure is described
in the MPS1 Software Manual MAMPS1-SW/E (see 1.5 – Applicable Documents).
Configuration verification
Whilst the actual upload of data is controlled by CRC verification and other techniques, in
order to fulfil the IEC 61508 requirements a manual verification of this upload is required. The
verification is made by downloading the configuration from the MPC4 card to the computer
and comparing the data received with the original data uploaded to the card.
This procedure is described below.
• Select the appropriate MPC4 card on the MPS software (as used in 3.9.3 – Upload the
levels and configuration).