Drip Drop PC-200 - 5.2.1 Digital inputs

MANUAL PC-200
Ver. 2.12.xx/10/22/2010-UK
Page 13 (61)
5.2.1 Digital inputs
There are totally 10 digital inputs 24 VDC available according to the list below:
1-2 Pumps 3 Pumps
Each of these inputs has following choices to be set:
Function: in use / not in use -
You can choose not to use the input.
Signal type: NC/NO
Here you specify if the input is NC or NO.
NC = normally closed and NO = normally open
Alarm function
Here you specify if you want to generate an alarm or
not, Yes or No.
Signal delay[s]:
This is a delay of the signal activation.
Backup operation / Level switch operation
DI 7 low level switch and DI 8 High level switch can be used to start and stop the pumps;
1. If level sensor is used this function can be used as a security backup to start and stop the pumps
if there is a problem with the level measuring.
2. If NO level sensor is used, the means of start and stop of the pumps will be with level switches.
With the start switch the first pump in the alternation cycle will start and it will stop with the
low level switch. If the level keeps increasing when the first pump is started (start level switch
is still active) after predefined time (see 5.3.5 Max. time starts ) a second pump will start,
when the low level switch is reached the pumps will stop with a time delay between the stops
(see 5.3.5 Min. time stops).
Note
If an alarm is activated this means that the alarm is sent either as an SMS message or to a
SCADA-system
Alarm type not activated – if you choose not to activate an alarm, no alarm will be generated when an
alarm signal goes active. If this is a signal which forces the pump to stop for ex. a motor protector or a
temperature, it can be a little confusing that a pump has stopped but that there is no alarm. If you have
configured an input this way you have to go to “alarm status” to find out why the pump has stopped.
DI1 P1 Not in Auto
DI2 P1 Motor protector
DI3 P2 Not in Auto
DI4 P2 Motor protector
DI5 Not in use
DI6 Overflow float
DI7 Low level float
DI8 High level float
DI9 Ext.Block/Ovf
DI10 Attendance check / Person alarm
Note! See chapter 5.4.5, page 33
DI1 P1 Not in Auto
DI2 P1 Motor protector
DI3 P2 Not in Auto
DI4 P2 Motor protector
DI5 P3 Not in Auto
DI6 P3 Motor protector
DI7 Low level float
DI8 High level float
DI9 Ext.Block/Ovf
DI10 Attendance check / Person alarm
Note! See chapter 5.4.5, page 33