MADDALENA microCLIMA U - 9.6.1 Pulse Output Technical Data; 10 Information Messages; 10.1 Message Description

2015_03_03 10
9.6.1 Technical data pulse output
Pulse output class
OA (electronic switch) according to EN 1434-2:2007
Pulse value heat energy
1 kWh/pulse
Pulse value volume (optional)
100 l/pulse
Peak switching current
300 mA ~/-
Switching voltage, maximum
35 V ~/-
Switching power, maximum
300 mW
Contact isolation
> 10
9
Ohm
Contact resistance (on)
max. 25 Ohm
Contact capacity
1.5 pF
Maximum current
120 mA
Withstand voltage (open contact)
350 V ~/-
Closure time
125 ms
Interval between pulses
125 ms
10 Information Messages
When the instrument has detected an information message, the message symbol is displayed:
The specific message can be found at the menu item 8 ‘Information message’ in Level 1/Main loop (see section 7
“Display”). The instrument recognizes eight message causes, which can also occur in combination with each other.
The messages are shown on the display. The message code is displayed alternately in binary and hexadecimal form.
Binary display
Description
Hexadecimal display
1 at first place
Low battery
H 80
1 at second place
Check sum error
H 40
1 at third place
E
2
PROM defective
H 20
1 at fourth place
Instrument has been reset
H 10
1 at fifth place
Time-out TDC (Time-to-digital
converter)
H 08
1 at sixth place
Internal calibration defective
H 04
1 at seventh place
Return flow sensor defective
H 02
1 at eighth place
Forward flow sensor defective
H 01
Example: Time-out TDC (Time-to-digital converter)
Message
Low battery
Check sum error
E²PROM fault
Reset
Time-out TDC
Internal calibration error
Return flow sensor fault
Forward flow sensor fault
Alternating hexadecimal
message displayed (LCD)
Bit
7
6
5
4
3
2
1
0
Display location
1
2
3
4
5
6
7
8
Alternating binary
message displayed (LCD)
When a message appears in the standard display (total heat, or alternating total heat and cooling energy), with the
exception of the messages ‘Reset’ (10) and ‘Time-out TDC’ (08) in the case of air in the measuring tube, the
instrument must be exchanged and sent to the supplier for examination.