Spirax Sarco LC2250, Инструкция по установке и обслуживанию

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IM-P402-130 EMM Issue 9
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6.4 Commissioning - Full
Enter 'commissioning' as stated in Section 2, and follow the main menu structure to make
the changes required.
Warning:
The minimum conductivity when used with the LP20 / PA20 or PA420 is 5 µS / cm or 5 ppm.
6.4.1 Main menu structure
In put S elect – Selects input for the type of level transducer i.e.:
1 - 6 V (PA20) or 4 - 20 mA (PA420).
In put F ilter – 3 settings of water level signal damping to suit turbulent conditions.
Note: excessive delays can cause system instability. 2 seconds, 8 seconds or
16 seconds.
In put A larm – to warn that the input is out-of-range i.e.:
1 - 6 V (PA20) or 4 - 20 mA (PA420).
Off or On.
Alarm 1 - A larm S elect – sets the alarm to be a low alarm or a high alarm. hi or Lo.
Alarm 1 - A larm level P ercentage – Sets the alarm level as a percentage of
gauge glass. The hysteresis is fixed at 5%.
AL arm F ilter – Select 'on' to enable an 8 second delay option to avoid over-
frequent switching in turbulent conditions.
AL
arm
L
atch –
Latch Off – alarm will operate only until the level recovers.
Latch On – alarm will continue to operate until reset by entering the alarm reset,
passcode or the commissioning menu passcode.
Off or On.
Ret ransmit – selects 4 - 20 mA or 0 - 20 mA retransmit output signal.
4.20 or 0.20.
Alarm 2 - A
larm
S
elect – sets the alarm to be a low alarm or a high alarm. hi or Lo.
Alarm 2 - A larm level P ercentage – Sets the alarm level as a percentage of
gauge glass. The hysteresis is fixed at 5%.