Endress+Hauser Cerabar S PMC71, Functional Safety Manual

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Cerabar S PMP71 Commissioning (installation and configuration)
Hauser 27
Procedure with increased security during parameter entry
Locking
With the "Increased security during parameter entry" method, the device is locked by a
password at the end of the locking sequence.
Locking by password has the highest priority and can only be disabled via the SAFETY
LOCK and SAFETY PASSWORD parameters.
Unlocking
1. Select the "SAFETY CONFIRM." group (menu path: (GROUP SELECTION→)
OPERATING MENU → SAFETY CONFIRM.)
2. Select the "Unlock" option via the SAFETY LOCK parameter.
3. Enter the password "7452" via the SAFETY PASSWORD parameter. If the password
entered is correct, the SAFETY LOCK or SAFETY LOCKSTATE parameter displays the
status "Unlocked".
Procedure for standard device configuration
If you are using the "Standard device configuration" method, the device must be locked via
the software and/or hardware (see the associated Operating Instructions).
The damping setting via DIP switch 2 (damping: on/off) is independent of software
and/or hardware locking. The switch position must therefore comply with the factory
setting: on (damping on). The damping value can be set to 0 s where needed.
Unlocking a SIL device
When SIL locking is active on a device, the device is protected against unauthorized
operation by means of a locking code and, as an additional option, by means of a hardware
write protection switch. The device must be unlocked in order to change parameters, for
proof-tests as well as to reset self-holding diagnostic messages.
4.6 Parameters and default settings for SIL mode
4.6.1 "Increased security during parameter entry" method
The device checks whether certain operating steps have been performed beforehand or
whether invalid parameters have been configured. If this is the case, a message appears to
this effect and this method is then no longer possible.
The "Increased security during parameter entry" method is no longer possible after the
following operating steps:
• Position adjustment performed or measuring range set on site without using the local
display.
• Following a download
• After a configuration backup using HistoROM®/M-DAT
• After a reset, except after the reset code "7864"
• After performing sensor recalibration
• Following current trimming
• For the LEVEL SELECTION parameter, the "Level easy height" or "Level standard" option
was selected (permitted setting for LEVEL SELECTION is "Level easy pressure").
The "Increased security during parameter entry" method is only possible again if a reset
(code "7864") is performed, thereby resetting all the parameters to the as-delivered state.
4.6.2 "Standard device configuration" method
The reset (code "7864") must be performed to use the "Standard device configuration"
method.