Write Protection - WIKA T32. S Serie Manual De Seguridad

2. Safety
CAUTION!
The instrument's error signalling current (error current) is configured in
accordance with the following requirements:
Error current, fail high (high alarm value):
■
settable in the range ≥ 21.0 mA to ≤ 23.0 mA (upscale)
Error current, fail low (low alarm value):
■
settable in the range ≥ 3.5 mA to ≤ 3.6 mA (downscale)
WARNING!
With certain device-side diagnosed hardware errors, the instrument gives
a downscale error signal with a loop current of < 3.8 mA, but can however,
for technical reasons, also ensure no signal ≤ 3.6 mA with the appropriate
configuration. The evaluation system must therefore interpret a loop current of
< 3.8 mA as a fault condition.
With certain inadmissible configurations (e.g. with deactivated write protection) the
transmitter likewise generates an error signal. In order to find the reason behind the error
signal, the diagnostic functions available over HART
offered, for example, in the WIKA_T32 configuration software (free download from www.
wika.com).

2.5 Write protection

The T32.xS offers a write protection functionality in order to prevent accidental
configuration changes. The write-protection password is factory set to "0".
A T32.xS temperature transmitter with SIL option will only work once the write
protection has been activated. Without write protection activated, such a
transmitter will signal an error.
Operation of the write protection
The write protection function is activated via a passsword (numbers in the range 0 to 65535
are allowed) and a switch (activate/deactivate write protection).
A change in the state of the write protection switch is only possible after the successful
input of the password. The password can be altered via its own menu.
CAUTION!
There is no possibility of retrieving a forgotten password! The only possibility is
for the password to be reset at the factory!
Also, activation of the write protection is only possible through the input of the
correct password!
WIKA safety manual temperature transmitter T32.xS
should be used. Such functions are
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