Grundfos DDC Data Booklet

Functions
14
SMART Digital S
3
Service display
Applies to DDA, DDC
Due to the optimised construction and the smooth
digital dosing principle, the service periods are more
than twice as long, if compared to conventional pumps.
However, the wear parts have to be exchanged in
regular intervals in order to keep the dosing precision
and the process reliability at a high level. The service
display in the pump shows when service of the wear
parts is required. The displayed service kit product
number makes service more convenient. The following
information is displayed in the Info display:
The following service messages appear, depending on
what happens first:
* Applies to DDA only
In case of difficult liquids the service intervals can be
shorter and service has to be performed earlier.
Level control
Applies to DDA, DDC, DDE-PR and DDE-P
The pump can be connected to a dual level control unit
for monitoring of the chemical level in the tank. The
pump can react to two level signals:
* Depending on the pump model and settings, the relay outputs can
be activated (see Relay output, page 14)
Relay output
Applies to DDA, DDC-AR and DDE-PR
The pump can activate 2 external signals by means of
built-in relays switched via internal potential-free
contacts. Depending on the process control
requirements, the following relay output settings can
be chosen:
Applies to DDA and DDC-AR
* default setting
Applies to DDE-PR control variant
* default setting
Display Description
Service
-
Soon
Now
No service required
Order parts for service soon
Service must be performed now
Service kit
8-digit Grundfos
product number
The service kit contains all parts
needed for standard maintenance:
diaphragm + valves
Reset service system
After performing the service, reset
the system
Display
Motor runtime
[h]
Regular intervals
[months]*
Service soon 7,500 23
Service now 8,000 24
Level sensors
Pump reaction*
DDA, DDC DDE-PR, DDE-P
Low-level signal
• Display is yellow
(Warning)
• is flashing
• Pump continues
running
• LED lights up in
yellow
• Pump continues
running
Empty tank
signal
• Display is red (Alarm)
• is flashing
• Pump stops
• LED lights up in red
• Pump stops
Signal
Description
Relay 1 Relay 2
Alarm* Alarm
Display red, pump stopped
(e.g. empty tank signal, etc.)
Warning* Warning
Display yellow, pump running
(low level signal, etc.)
Stroke signal Stroke signal Every completed stroke
Pump dosing Pump dosing* Pump is running and dosing
Pulse input Pulse input Every pulse coming in from pulse input
Bus control Bus control
Set by a command in the Bus
communication function (page 15)
(only DDA)
Timer cycle
Timer can be set in menu: on-time,
cycle-time, start delay (only DDA)
Timer week
Timer can be set in menu: procedure,
on-time, start time and weekdays (only
DDA)
Contact type
NO* NO* Normally Open Contact
NC NC Normally Closed Contact
Signal
Description
Relay 1 Relay 2
Alarm* Empty tank, motor blocked
Low level* Low level tank
Stroke signal Every completed stroke
Pulse input Every pulse coming in from pulse input
Contact type
NO* NO* Normally Open Contact
NC NC Normally Closed Contact

Grundfos DDC Specifications

General

Brand	Grundfos
Model	DDC
Category	Water Pump
Language	English