KSB PumpDrive 2 User manual

Field Bus Module
BACnet MS/TP Gateway
PumpDrive 2
Supplementary Operating
Manual

Legal information/Copyright
Supplementary Operating Manual BACnet MS/TP Gateway
Original operating manual
All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.
Subject to technical modification without prior notice.
© KSB SE & Co. KGaA, Frankenthal 05/06/2019

Contents
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BACnet MS/TP Gateway
Contents
1 Supplementary Operating Manual....................................................................................................... 4
1.1 General..............................................................................................................................................................4
1.2 Function ............................................................................................................................................................4
1.3 Field bus module connections .........................................................................................................................4
1.4 Installing the field bus module........................................................................................................................5
1.5 Connecting the field bus module....................................................................................................................7
1.6 Setting the parameters of the field bus module............................................................................................9
1.7 Operation of frequency inverter with BACnet MS/TP..................................................................................11

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1 Supplementary Operating Manual
1.1 General
This supplementary operating manual accompanies the installation/operating
manual. All information contained in the installation/operating manual must be
observed.
Table1: Relevant operating manuals
Type series Reference number of the operating/installation
manual
PumpDrive 2 4074.81
1.2 Function
The BACnet MS/TP module is used to connect the frequency inverter to a BACnet MS/
TP network. A BACnet MS/TP module is required for monitoring and open-loop or
closed-loop control purposes for each frequency inverter in single-pump or multiple
pump configurations of up to 2 pump sets.
▪BACnet = Building Automation and Control Networks
▪MS/TP = Master-Slave/Token Passing
Interface The BACnet MS/TP module has a BACnet MS/TP interface.
Communication protocol BACnet MS/TP
Bus terminator External interface EIA-485 (RS 485)
Transmission rate 9600baud, 19200baud, 38400 baud,
57600baud, 115200 baud
Device type B-ASC
Information and downloads on BACnet are available online at http://www.big-
eu.org.
The BACnet MS/TP EIA-485 network cable should have the following properties:
▪Flexible
▪Shielded
▪Twisted wires for the data line
▪The wave impedance should be between 100 and 130 ohms.
▪For more details, see ANSI/ASHRAE standard 135, “Physical Layer” section.
Information on BACnet MS/TP and downloads for BACnet MS/TP are available online
at www.bacnet.org. For additional accessories for the BACnet MS/TP module (i.e.
M12 connectors and terminating resistors), see the type series booklet.
EDE lists
KSB provides an EDE file on the KSB web site for exchanging PumpDrive-specific
BACnet information. The EDE lists document all inbound and outbound objects with
the associated defined properties.
1.3 Field bus module connections
The field bus modules are plug-in modules.

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BACnet MS/TP Gateway
BA
1
3 4 5
2
Fig.1: Field bus module
Table2: Field bus module
Position
Component Description
1 M12 connector A B-coded, 5-pole
2 M12 socket B B-coded, 5-pole
3 Amber LED signal lamp Device-internal bus communication OK (heartbeat detected)
4 Green LED signal lamp Communication: Valid data package received
5 Red LED signal lamp Token loss (token timeout)
▪Can be retrofitted
▪Internal T-connector (bus looped through); uninterruptible even in the event of a
frequency inverter power failure
▪Connector for self -assembly
1.4 Installing the field bus module
The field bus module can be fitted in an available slot of the frequency inverter.

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Blind cover
11
Fig.2: Blind cover
1 Blind cover
1. Unscrew the cross recessed head screws in the blind cover.
2. Remove the blind cover.
Field bus module
Fig.3: Inserting the field
bus module
1. Carefully insert the field bus module into the open slot. The plug-in module is
guided on rails until it engages in the contact.
Fig.4: Securing the field bus
module
2. Secure the field bus module using the 4 cross recessed head screws. IP55
enclosure protection is not provided until the screws have been tightened.
CAUTION
Incorrect assembly
Impairment of protection provided by the enclosure (protection may be
compromised)!
▷Cover unused M12 connections with a cap (included in the scope of supply).

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1.5 Connecting the field bus module
Observe the following when connecting the field bus module:
▪Before the bus connection is established among the nodes, potential equalisation
must have been implemented and checked.
▪For high-frequency shielding, use shielded cables and assemble according to EMC
requirements.
▪A minimum distance of 0.3metres is recommended between such cables and
other electric conductors.
▪Do not use the bus cable to make any further connections in addition to the field
bus module (for example, 230V alert and 24V start).
▪A cable specified for the field bus module must be used as the connecting cable.
CAUTION
Incorrect installation
Damage to the field bus module!
▷Never supply power to the field bus module via the M12 connections.
BA BA
21
Fig.5: Connecting the field bus module
Table3: Connecting the field bus module
Item Device M12 connector
1 Frequency inverter 1 M12 connector A: Coming
M12 socket B: Going
2 Frequency inverter 2 M12 connector A: Coming
M12 socket B: Going
The illustration shows a redundant version with one module for each pump set. For
non-redundant versions, the second BACnet module can be omitted.

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DC D
1
2
3 3
AB
4
A B
3
Fig.6: Connecting a dual-pump system to the BACnet network (example)
1 BACnet A device
2 M12 cable for dual-pump configuration
3 M12 cable, BACnet MS/TP
4 Additional subscribers to BACnet
b)
5
4
32
1
a)
5
3
4 1
2
Fig.7: Pin assignment: a) Module contact arrangement b) Connector contact
arrangement
Table4: Pin assignment
Pin Conductor colour
code, line (CAN open)
Conductor colour
code, line (DIN47100)
M12 connector/M12
socket assignment (B
coding)
Signal
1 - - VP (+5V output) +5V
2 Blue Brown D- RS-485A/data-
3 Black Green GND GND
4 White White D+ RS-485A/data+
5 - - Shielding Shielding
Thread - - Shielding Shielding

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5
4
32
1
D +
GND
D -
Shielding
5
3
4 1
2
MN
Fig.8: User-configured cable
ⓂM12 connector ⓃM12 connector
1 2 3 4 51 2 3 4 5
D +
D -
GND
NM
63
52
51
AB
1 2 3 4 5 1 2 3 4 5
A B
Shielding
Fig.9: Wiring diagram
Bus terminator Bus system termination is implemented as follows in line with the BACnet standard:
1
120
2
3
4
Fig.10: Bus terminator
Bus termination with polarisation is implemented at the start of the MS/TP bus in line
with the BACnet standard (typically at the BACnet router).
NOTE
The frequency inverter is reset when a field bus module is replaced or retrofitted.
Menu 3-12 for setting the parameters of the field bus module is then enabled in the
control panel.
1.6 Setting the parameters of the field bus module
Field bus control must be activated in the frequency inverter when using the field bus
module.

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Settings for the slave address and the control point are made at the control panel of
the frequency inverter.
Table5: Parameters for BACnet MS/TP module
Parameter Description Possible settings Factory setting
3-12-5-1 Device Identification
Device Object-Instance Number
0-4194303 Generated value
3-12-5-2 MS/TP MAC Address
Network address in accordance with MS/TP
frame format
1-254 254
3-12-5-3 Baud Rate
Baud rate of the BACnet slave
▪9600
▪19200
▪38400
▪57600
▪115200
38400
3-12-5-4 Pump Number
Unique number of the pump in the multiple pump
system
1-2 1
3-12-5-5 Communication Monitoring Time
If the BACnet module is not in the token cycle of
the MSTP network for a longer period of time, a
broken wire is reported.
0...60s 20s
3-12-5-6 Device Name
Device Object-Name Device name for device
identification in the network
Configuration via configuration
tool, maximum of 32 characters
KSB PumpDrive
3-12-5-7 Device Description
Device Object-Description Device description for
device identification in the network
Configuration via configuration
tool, maximum of 32 characters
KSB PumpDrive
3-12-5-8 Installation Location
Device Object-Location Installation location of
BACnet subscriber
Configuration via configuration
tool, maximum of 32 characters
KSB PumpDrive
NOTE
If the field bus is only used for monitoring purposes, the Control Point parameter
(3-6-2) is set to Local.