Grundfos DDI Series

6
Setting and executing additional control functions
• Remote on/off (byte 2/bit 0)
– Switches the pump on and off. For switching on, the pump
must not have been manually stopped or switched off via
external remote on/off. External remote off and switching off
via PROFIBUS switch the pump off independently of each
other.
• Slow mode (byte 2/bit 1)
– Slow-mode operation is switched on and off.
• Continuous operation for deaeration and suction (byte 2/bit 2)
• Deletion (resetting) of the total capacity dosed (byte 2/bit 3)
– The display of the total capacity dosed (since the pump was
last reset) is reset to zero.
• Error resetting (byte 2/bit 4)
– Resetting of an error that has occurred and restarting of the
pump if it was set to "Start" locally.
• Dosing controller (byte 2/bit 5)
– An installed Flow Monitor can be switched on and off.
6.3.2 Messages returned from the pump
Data flow from the pump to the PROFIBUS master
8 bytes are available for returning messages from the pump:
The following data is sent from the pump to the PROFIBUS
master via PROFIBUS-DP:
• Actual value: volume flow (ml/h) / chamber pressure (mbar)
(bytes 1, 2)
– The set setpoint is determined if "Transfer of actual value" is
set to "Volume flow" (DDI 209 in ml/h, DDI 222 in cl/h).
The chamber pressure in mbar is transferred when
"Pressure value" is set and "Pressure control" is activated.
• Display of the total capacity dosed (bytes 3, 4)
– Display of the total capacity dosed in dl (decilitres) since the
value was last reset.
• Error messages (bytes 5, 6/bits 15-0)
– dosing controller
– diaphragm leakage detection
– external pre-empty signal
– empty signal
– Hall sensor (for motor monitoring)
– PROFIBUS communication
– current control – for operating mode "manual" 4-20 mA.
An error message is sent if the current input is < 2 mA.
Bit
Byte 2:
Control functions for
DDI 209
Byte 2:
Control functions for
DDI 222
0
Remote on/off
0 = off
1 = on
Remote on/off
0 = off
1 = on
1
Slow mode
0 = off
1 = on
Slow mode 1
0 = off
1 = on
2
Continuous operation
(deaeration mode)
0 = off
1 = on
Continuous operation
(deaeration mode)
0 = off
1 = on
3
Deletion (resetting) of the
total capacity dosed
0 -> 1 = Resets the total
capacity dosed
Deletion (resetting) of the
total capacity dosed
0 -> 1 = Resets the total
capacity dosed
4
Error resetting 0 -> 1 =
Resets the error
Error resetting 0 -> 1 =
Resets the error
5
Flow
0 = off
1 = on
Flow
0 = off
1 = on
6 Reserve Slow mode 2
7
Pressure monitoring, only
with Flow Monitor option
0 = on
1 = off
Pressure monitoring
0 = on
1 = off
Byte Data type Data length [byte]
1, 2
Unsigned 16
Highbyte, Lowbyte
2
3, 4
Unsigned 16
Highbyte, Lowbyte
2
5, 6 Unsigned 16 2
7, 8 Byte 2
Bit Bytes 5, 6: Error messages
0
Dosing controller
0 = no error
1 = error
1
Diaphragm leakage detection (MLS)
0 = no error
1 = error
2
Pre-empty signal
0 = no error
1 = error
3
Empty signal
0 = no error
1 = error
4
Hall sensor (for motor monitoring)
0 = no error
1 = error
5
PROFIBUS communication (inverse)
0 = error
1 = no error
6
Current control
(< 2 mA in operating mode 4-20 mA)
0 = no error
1 = error
7, 8 Reserve
9
Internal pre-empty signal
0 = no error
1 = error
10 Reserve
11
Only for DDI 209 with Flow Monitor and DDI 222:
If the pressure is exceeded 5 times (starting can be
initiated after 10 minutes)
0 = no error
1 = error
12
Only for DDI 209 with Flow Monitor and DDI 222:
If the pressure is exceeded 1-5 times in succession
0 = no error
1 = error
13-15 Reserve