Siemens Sitrans 사용자 설명서
Page 34
SITRANS LC 500 – INSTRUCTION MANUAL
7ML19985GE01
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Upper and Lower Threshold, (menus 13 and 14) and the accompanied delays (menus 15
and 16).
and 16).
Initially the solid-state output is disabled for both signal output and fault/failure output
(menu 17). When the solid-state switch is to be operated as fault/failure output (for
example, for a separate shutdown system), we recommend disabling the operation for
signal output (select Disabled Mode in menu 17 on page 70). There is no delay in the
operation for fault/failure output.
(menu 17). When the solid-state switch is to be operated as fault/failure output (for
example, for a separate shutdown system), we recommend disabling the operation for
signal output (select Disabled Mode in menu 17 on page 70). There is no delay in the
operation for fault/failure output.
Switch Protection (Diode)
Factory Settings
The SITRANS LC 500 has a number of default factory settings. If the required settings for
the application are known, the settings can be modified during final testing.
the application are known, the settings can be modified during final testing.
Settings:
Notes:
•
The solid-state output should only be used in circuits where the current is limited
by a proper load.
by a proper load.
•
Due to the limited switching capabilities of the solid-state switch component, an
auxiliary relay must be applied when switching high-current/high-voltage
apparatus.
auxiliary relay must be applied when switching high-current/high-voltage
apparatus.
WARNING: When the solid-state switch is activating an external
relay, protection diodes must be connected in the correct polarity
across the relay coil to prevent possible switch/relay damage
resulting from inductive spikes generated by the relay coil.
Note:
To restore factory settings, use menu item 12 (see
for details).
Setting
Description
ID
Has a unique serial number
TV0 Units
PF
TV0 UL
3300 pF [switch position (0)C]
TV0 LL
1.666 pF [switch position (0)B]
TV0 URV
3300 pF [switch Position (0)F]
TV0 LRV
0.00 pF [switch Position (0)E]
AO1
4-20 mA is 0-100% [position (0)8]
TAG
"customer input data via HART"
DESCRIPTOR
"customer input data via HART"
MESSAGE
"Siemens Milltronics P I"