D397-53-880 Issue C
Page 20
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Operation
4.7.13
Module 699 - DP Speed Demand
This module should only be used on inverter driven pumps.
Output Bytes: 2 Bytes which are a 16-bit unsigned number for DP speed demand in 0.1% of configured full speed.
Input Bytes:
None
4.7.14
Module 55 - DP Body Temperature
On the PDT this temperature is called “TCS REF”.
Output Bytes: None
Input Bytes:
Bytes 1 & 2 are a 16-bit signed number for DP temperature in °C.
Byte 3 is condition byte (see
4.7.15
Module 63 - Pump Internal Temperature
On the PDT this temperature is called “DP Temp”.
Output Bytes: None
Input Bytes:
Bytes 1 & 2 are a 16-bit signed number for temperature in °C.
Byte 3 is condition byte (see
4.7.16
Module 12 - MB Override
This module provides MB state feedback. It can also be used to override the control of Module 11 (as normally MB
operation would follow DP) to stop a booster. It can further start a booster, but only if the Profibus module has
control of the pump. (See
). Use this command with caution as if the Profibus module does not have
control it will be possible to stop the booster but not restart it. It is also not recommended to run the MB with the
DP stopped.
Output Byte:
Single byte is MB override.
Values: 1=On
2=Off
Other values - ignored.
Note:
Demand value is only sent from the Profibus module to the pump on change of state.
Input Bytes:
Byte 1 reports the state (feedback) specifically of the Booster.
Values: 0=Off
1=Off going On
2=On going off fast
3=On going off slow
4=on.
2nd input byte is condition byte (see
4.7.17
Module 46 - Gas Ballast
This module provides Control of the Gas Ballast valve and feedback of its actual state. Normally Gas Ballast valve
operation is controlled by the main DP control function (module 11) and use of this module can override the
(automatic) Gas Ballast valve control from that module.
WARNING
Configuring this module contains significant risk as if the pump is stopped with the valve open the
vacuum system may over-pressurise.