Survey Of Functions; Normal Display; Alarm; Limit For Upper Level - Danfoss EKC 347 Manual

Survey of functions

Function

Normal display

The liquid level is indicated in %
The % value is calculated on the basis of the input signal and the definition in "o31".
The valve's actual opening degree can be displayed by giving the lower button a brief
push (1s). Cf. also o17.
Reference
Set point
Regulation is based on the set value provided that there is no external contribution
(o10).
(Push both buttons simultaneously to set the setpoint).
External contribution to the reference
This setting determines how large a contribution is to be added to the set reference
when the input signal is max (20 mA or 10 V. Cf. also o10).
The value is set in %-points.
Start/stop of regulation
With this setting the level regulation can be started and stopped. Start/stop of level
regulation can also be performed with the external contact function. Regulation is
stopped if just one of them is OFF.

Alarm

The controller can give alarm in different situations.
When there is an alarm the three lowest LED's at the front of the controller will flash,
and the alarm relay is cut in

Limit for upper level

Here you set the limit value for the upper level indication. The value is set in %. The
relay for the upper level will become activated when the level exceeds the set value.
Limit for lower level
Here you set the limit value for the lower level indication. The value is set in %. The re-
lay for the lower level will become activated when the level drops below the set level.
Time delay for upper level limit
When the limit value is exceeded a timer function will start. The relay will not become
activated until the set time delay has been passed. The time delay is set in seconds.
Delay for lower limit level
When the limit value is exceeded a timer function will start.The relay will not become
activated until the set time delay has been passed.
The time delay is set in seconds.
Limit for alarm level
An alarm level can be set which when passed will activate the alarm relay- The value is
set in %. Cf. also the definition in A18.
If the limit alarm (A3) is not required, it can be avoided by means of the following set-
ting in A16:
100 : If the rising level definition has been chosen. (A18=0 or 2)
0: If the falling level definition has been chosen. (A18=1 or 3)
Time delay for alarm level
When the alarm level is exceeded a timer function will start. The relay will not become
activated until the set time delay has been passed.
The time delay is set in seconds.
4 Manual RS8AX702 DKRCC.ES.R1.A1.02/ 520H4020 © Danfoss 01-2011
Para- Parameter by operation via
meter data communication
Level control
- Liquid level
- OD %
- SP Liquid Level
r06 r06 Ext. Ref.offset
r12 r12 Main Switch
Level Alarms
A01 A01 Upper Dev.
A02 A02 Lower Dev.
A03 A03 Upper Delay
A15 A15 Lower Delay
A16 A16 Limit Alarm
A17 A17 Limit Delay
EKC 347