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Pa ram e ter De scrip tion Fac tory De fault
P_WORD Password. The password is used to prevent unauthorized access to the
programming parameters. The password may be any value between 0
and 9999. A password value of 0 disables the password feature.
0 = Password
Disabled
BD_ENB Blow Down Enable. The Blow Down Enable parameter allows the user
to enable or disable the integrated blow down sys tem.
0 = Blowdown
Disabled.
HT_ENB HART En able. The HART
®
En able pa ram e ter al lows the user to en able
or dis able the HART
®
Com mu ni ca tion op tion. Avail able as sign ments are
0 = Dis abled and 1 = En abled.
0 = Default if no
HART
®
option
installed.
1 = Enabled if
HART
®
option
installed.
PROGRAM PARAMETERS OPERATION MANUAL
Page 18 MST2000 Multivariable SMARTFLOW
®
Transmitter Brandt Instruments, Inc.
• A value of ‘0’ dis ables the Blowdown Sequence.
• A value of ‘1’ en ables the blowdown func tion with ex ter nal trig ger
only. An external trig ger must be ap plied to the ‘IN1’ ter mi nal to
ini ti ate the Blowdown se quence.
• A value be tween 2 and 1440 en ables the MST2000 to con trol the
Blowdown se quence on timed in ter vals (in min utes). The time in -
ter val be gins as soon as the MST2000 is put back in ‘RUN’
mode. For val ues be tween 2 and 1440 min utes, an ex ter nal trig -
ger may also be ap plied to com mand ad di tional blowdown se -
quences. The ex ter nal trig ger event does not re set the MST2000
blowdown in ter nal timer.
þNote: The min i mum ex ter nal trig ger pulse width is 500 mil li sec onds.
þNote: IF the HART
®
op tion is en abled, 3.8 milliamp ‘fault cur rent’ and 3.9
milliamp ‘un der range’ cur rent val ues are not al lowed on the 4-20mA out put
ter mi nals dur ing RUN Mode.