Igema EWLS, Installation And Operating Instruction

Page: 13 / 36

13
4.5 Operation
Operation of the EWLS is carried out by the 4 buttons on the front of the Control Unit CU-3.
This is
described in Chap. 6 “Configuration via Menu”.
4.6 Error message
In the LCD display of the CU-3 errors from the evaluator and probes are displayed number-
coded and in plain text abbreviations.
For analysis and error correction see Chap. 11.
4.7 Overview of the system properties
- Up to 4 probes (minimum 2 probes) for level measuring / switching
- Can be used up to design pressures PS = 200 bar / 2901 PSI // Design temp. of TS =
554°C / 1030°F
- Double power supply (optional) for high availability (redundancy)
- Self-monitoring electronics for high system safety during monitoring functions
- Wire breakage monitoring
- Adjustable switching delay on all outputs for avoiding false signals
- 1 potentially free alarm output (SPDT) for the reaction in case of low water and/or
overfilling
- 1 potentially free error output (SPDT) for the display of (electronic) system errors
- 3 user specific and freely programmable outputs (SPDT): (when 2 probes are used in the
EWLS)
IGEMA
EWLI3 - CU