Endress+Hauser cerabar S PMC Series - Locking;Unlocking Operation

4 mA levelThe current signal range is set to 3.8…20.5 mA as standard when operating correctly. When
selecting the 4 mA level, a minimum current signal is not to fall below 4 mA.
Thus:
•
OFF: lower current level of 3.8 mA
•
ON: lower current level of 4 mA
# Matrix Path through the
menus
Entry
Main group: Additional functions
1 V7H3
(V1H3)
➤ Current output
min. 4 mA
e.g. ON
Confirm
Alarm modeTo indicate an error, an error code is transmitted with the measured value.
The bar graph in the display adopts the value selected by the operator.
For the "Alarm mode" (V0H8)
1)
= "Max. alarm" setting, the current is adjustable from
21…22.5 mA using the "Max. alarm current" (V9H4) parameter (Factory setting: 22 mA).
# Matrix Path through the
menus
Entry
Main group: Basic settings
1 Select response on error
V0H8 ➤ Alarm mode
1)
e.g. Max. alarm
Confirm
Main group: Service
2 Enter current "Max. alarm" value
V9H4 ➤ Max. alarm
current
e.g. 22 mA
Confirm
1) INTENSOR: "Set output damping"
6.5 Locking/unlocking operation
After calibration or entering all parameters, operation can then be locked.
•
using the keys +Z and –S or
•
via the matrix by entering a three-character code number ≠ 130 in V9H9
(130 is the code for unlocking the measuring point).
This protect the measuring point against unwanted and unauthorised changes to
parameters entered.
Keys
# Key Entry
1 Locking operation:
Simultaneously press +Z and –S once
2 Unlocking operation:
Simultaneously press +S and –Z once
Matrix
# Matrix Path through the
menus
Entry
Main group: Service
1 Locking operation (blocking)
V9H9 ➤ Locking e.g. 131 (≠130)
Confirm
2 Unlocking operation (releasing)
V9H9 ➤ Unlocking 130
Confirm
The table summarises the locking function:
–
–
+
Z
S
+
–
–
+
+
Z
S
–
–
+
Z
S
–
–
+
Z
S
+
+
BA187Y48
Locking
Simultaneously
press "+Z" and "–S"
Unlocking
Simultaneously
press "–Z" and "+S"
Locking with keys has priority
Locking via Displaying/
reading
parameters
Changing/writing via Unlocking via
Keys Communication Keys Communication
Keys
yes no no yes no
Matrix
yes no no yes yes
t
I
max.
min.
BA187Y73
Error
Max. alarm,
max. current adjustable,
range 21…22.5 mA
Value hold
Min. alarm = 3.6 mA
Cerabar S 6 Level Measurement
Endress+Hauser 39