Badger Meter SRD/SRI Valve Positioners - Manual (Page 74)

LEDs Description of message / LCD text Remedy
M 1 2 3 4
¾ - ¼ ¼ ¼
Message 14:
Maintenance
required Operating point of controller is outside of
permissible tolerance Pneumatic components have to be checked and if
necessary readjusted. Filters are possibly blocked
and have to be replaced
M 1 2 3 4
¾ ¼ ¼ ¼ ¼
Message 15: Not defined
SAFETY REQUIREMENTS
EMC and CE
For notes regarding Electromagnetic compatibility EMC and CE labels, see the product data sheet
In order to ensure EMC protection, the black electronic cover made of conductive plastic has to be screwed to the housing
Explosion Protection
(Only if ordered)
Technical data for explosion protection see Product Specifications Sheet PSS EVE0105 A or Certificates of Conformity EX
EVE0105 A
For installations located in explosive atmospheres, all relevant national regulations and installation conditions must be
observed, e g in the Federal Republic of Germany ElexV and DIN VDE 0165
MPORTANT I
When repairing explosion-protected equipment, observe the national regulations.
Repairs involving parts must be manufacturer’s original parts
The following applies to the Federal Republic of Germany: Repairs involving parts required for explosion protection must
either be carried out by the manufacturer or by authorized personnel and confirmed by certificate
SYSTEM CONFIGURATION
The safety requirements (see above) must be observed!
HART Communication
When using the ‘communication’ (an alternating current signal, which is modulated onto the 4-20 mA signal), it must be
observed that the connected outputs are suitable for the used frequency ranges Apart from the load, also the alternating
current impedances have to be observed It is recommended therefore, to use only suitable instruments
To eliminate crosstalk between leads and to reduce disturbances through electromagnetic influences, it is recommended to
use twisted paired shielded leads (0 3…2 5 mm 2 , max 100 pF/m)
The capacities of the leads and the connected instruments must not exceed the maximum values for HART
All components which are connected to the SRD in an explosion hazardous area, require an Ex-Approval The applicable
limit values must not be exceeded These limit values also have to be adhered to when connecting additional capacitances,
inductances, voltages and currents
Measuring HART Communication Signal
If a reliable communication signal cannot be received, it is advisable to check the level with an oscilloscope The first data
block always comes from the configurator and the second block is the reply from the SRD
Safety Requirements
Page 74 August 2014 POS-UM-00010-EN-03