Siemens SINAMICS V20 Inverter User manual

___________________
___________________
___________________
___________________
___________________
___________________
SINAMICS
SINAMICS V20 multi-pump control
Operating Manual
05/2018
A5E43416874
-002
Overview
1
Pump switch-in/switch-out
2
Stop mode
3
Pump switchover
4
Service mode
5
Faults and alarms
6

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E43416874-002
Ⓟ
05/2018 Subject to change
Copyright © Siemens AG 2017.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 3
Table of contents
1 Overview................................................................................................................................................. 5
2 Pump switch-in/switch-out....................................................................................................................... 9
3 Stop mode ............................................................................................................................................ 19
4 Pump switchover................................................................................................................................... 21
5 Service mode........................................................................................................................................ 25
6 Faults and alarms ................................................................................................................................. 27

Table of contents
SINAMICS V20 multi-pump control
4Operating Manual, 05/2018, A5E43416874-002

SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 5
Overview
1
Multi-pump control is suitable for applications that require simultaneous operation of up to
four pumps, for example, equalizing significantly fluctuating water pressures or flow rates.
After the multi-pump control is enabled, you can configure the following four sub-functions
based on your particular requirements: switching-in/out, stop mode, pump switchover, and
service mode.
Note
To control more than two pumps simultaneously, you must connect an optional I/O Extension
Module to expand the number of V20
I/O terminals. For more information about this option
module, see Section "I/O Extension Module" in "SINAMICS V20 Inverter Operating
Instructions".
Enabling the function
To enable this function, you must first make sure that the firmware version of the V20
inverter is 3.94 or later. Then, use the optional Parameter Loader and an SD card to
download the multi-pump control script files into the inverter. For more information about the
Parameter Loader and the SD card, see Section "Parameter Loader" in "SINAMICS V20
Inverter Operating Instructions".
Proceed through the following steps to download the script files into the inverter:
1. Download the script files "autorun.lua", "utils.lua", and "SSTAGE.bin" via the Internet
address (https://support.industry.siemens.com/cs/us/en/ps/13208).
2. Place "SSTAGE.bin" in the root directory of the SD card.
3. Create a folder named "romfs" under the root directory of the SD card and place
"autorun.lua" and "utils.lua" in the folder.
4. Fit the Parameter Loader to the inverter, and then insert the SD card into the Parameter
Loader.
5. Power on the inverter, and data transfer starts automatically. The inverter displays
"Updating" during the transfer.
6. After a successful transfer, the inverter displays "Update complete". If any fault or alarm
occurs during the transfer, see Section "Faults and alarms (Page 27)" or Section "Faults
and alarms" in "SINAMICS V20 Inverter Operating Instructions" for possible reasons and
remedies.
7. Remove the Parameter Loader and re-power on the inverter. Then the multi-pump control
function is automatically enabled.

Overview
SINAMICS V20 multi-pump control
6Operating Manual, 05/2018, A5E43416874-002
Note
•
Make sure that the function-specific script files you use is downloaded from the previous
Internet address. Otherwise, alarm A650 may appear reminding you that this script is not
an officially released script. Also, you can download the "SINAMICS V20 Inverter
Operating Instructions" from the link.
•
You can obtain the "SSTAGE.bin" file from the corresponding firmware updating package.
Make sure that the version of the firmware updating package to be downloaded and the
version of your V20 firmware are the same.
•
After you successfully download the script files into the inverter, all parameters used for
this function are automatically set to their default settings. Note that the default settings of
parameters P0731, P0732, P0733, P0734, P0840, P0845, P1200, and P2200, which are
different from their factory defaults, are changed to adapt to the function. To make sure
that the multi-pump control function runs properly, do not manually set the values of
P0840 and P0845 after the function is enabled.
•
Multi-pump control uses PID controller-specific parameters. For more information about
how to configure those parameters, see Section "Setting the PID controller" in
"SINAMICS V20 Inverter Operating Instructions".
•
If you use the motor staging function on the inverter, this function is automatically
disabled after the multi-pump control function is enabled.
Setting parameters
Parameter
Function
Setting
P4002 Control of script interpreter This parameter controls the execution of the script.
0: Stop script
1: Start script
Range: 0 to 1 (default setting: 1)
r4003 Status of script interpreter Displays the status of the script interpreter.
0: Interpreter ready
1: Script loading
2: Script loading failed
3: Script executing
4: Script execution error
5: Script execution complete
Range: 0 to 5 (default setting: 0)
P4004 Script start control Controls when the script is executed.
0: The script will be executed only when the value of P4002 is changed from 0
to 1.
1: The script will be executed automatically after power-on if P4002 = 1.
Range: 0 to 1 (default setting: 1)
P4030 Multi-pump control script
parameter default
Controls the reset operation of the script parameters. The value change to this
parameter takes effect after the next time the script is started.
0: Set values of all script parameters to default settings after the script is started.
1: Do not reset.
Range: 0 to 1 (default setting: 1)

Overview
SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 7
Note
You can only use digital input 1 as the ON/OFF control source, related to r
4000.0.
Note
To enable the multi
-pump control function automatically after each inverter power-on, make
sure that you do not change the default setting of P4002 and P4004, that is, "1".

Overview
SINAMICS V20 multi-pump control
8Operating Manual, 05/2018, A5E43416874-002

SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 9
Pump switch-in/switch-out
2
The inverter uses four relays (KP1 to KP4), which are connected to digital outputs DO1 to
DO4, to switch pumps in and out according to the PID error (r2273). In addition, two groups
of contactors, KDs and KMs, are used to switch the pumps between inverter operation and
line system operation. Soft pump switching can be realized as all motors start/stop with ramp
speeds, so as to minimize the shock to the pipes.
Main circuit
Note
The maximum voltage on DO1 is ± 35
V DC. The maximum load current on DO1 is 100 mA.

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
10 Operating Manual, 05/2018, A5E43416874-002
External control circuit
Pump switch-in
If the pump controlled by the inverter runs at the maximum speed (P1082) and the PID error
is higher than the switch-in threshold (P2373) and lower than the delay override threshold
(P2376) for a specified time (P2374), the inverter first switches the pump from inverter
operation to line system operation, and then switches on an idle pump which is softly started
with a ramp-up speed and runs in inverter operation.
Note
If the PID error rises above the switch
-in delay override threshold (P2376), the inverter skips
the switch
-in delay (P2374) and performs the switch-in operation immediately.
Parameter P4012 is used to control the selection mode of the next pump that is softly started
by the inverter. Bits 01 to 04 of r4000 control the pump which is selected to run depending
on P4012.
●P4012 = 0: Selecting the next pump according to the fixed sequence. The inverter
switches in the pump by following the sequence M1, M2, M3, to M4.
●P4012 = 1: Selecting the next pump according to the operating hours. The inverter
switches in the pump with the least absolute operating hours (r4026 to r4029).

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 11

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
12 Operating Manual, 05/2018, A5E43416874-002
Pump switch-out
If the pump controlled by the inverter runs at a speed lower than the frequency switch-out
threshold (P4014 + P1080) and the PID error is lower than the PID error switch-out threshold
(-P2373) for specified time (P2375), the inverter first switches off the pump (OFF2) which
runs in inverter operation, and then captures a running pump and switches it from line
system operation to inverter operation. Parameter P4012 is used to control the selection
mode for switching in/out motors.
●P4012 = 0: Selecting the next pump according to the fixed sequence. The inverter
switches out the pump by following the sequence M4, M3, M2, to M1.
●P4012 = 1: Selecting the next pump according to the operating hours. The inverter first
switches out the pump with the most absolute operating hours (r4026 to r4029).
Note
If the PID error drops below the switch
-out delay override (-P2376), the inverter skips the
switch
-out delay (P2375) and performs the switch-out operation immediately.

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 13
Pump switch-out based on the fixed sequence (P4012 = 0)

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
14 Operating Manual, 05/2018, A5E43416874-002
Pump switch-out based on the absolute operating hours (P4012 = 1)

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 15
Setting parameters
Parameter
Function
Setting
P1080[0...2] Minimum frequency [Hz] This parameter sets minimum motor frequency at which motor will run
irrespective of frequency setpoint. The value set here is valid both for
clockwise and for counterclockwise rotation.
Range: 0.00 to 550.00 (default setting: 0.00)
P1082[0...2] Maximum frequency [Hz] This parameter sets maximum motor frequency at which motor will run
irrespective of the frequency setpoint. The value set here is valid for both
clockwise and counterclockwise rotation.
Range: 0.00 to 550.00 (default setting: 50.00)
P1200 Flying start Starts inverter onto a spinning motor by rapidly changing the output fre-
quency of the inverter until the actual motor speed has been found. Then,
the motor runs up to setpoint using the normal ramp time.
Settings 1 to 3 search in both directions:
= 0: Flying start disabled
= 1: Flying start always active
= 2: Flying start active after power on, fault, OFF2
= 3: Flying start active after fault, OFF2
Settings 4 to 6 search only in the direction of the setpoint:
= 4: Flying start always active
= 5: Flying start active after power on, fault, OFF2
= 6: Flying start active after fault, OFF2
Range: 0 to 6 (default setting: 1)
P2373[0...2] Motor staging hysteresis [%] P2373 is a percentage of PID setpoint that PID error r2273 must be ex-
ceeded before staging delay starts.
Range: 0.0 to 200.0 (default setting: 20.0)
P2374[0...2] Motor staging delay [s] This parameter defines the time that PID error r2273 must exceed motor
staging hysteresis P2373 before staging occurs.
Range: 0 to 650 (default setting: 30)
P2375[0...2] Motor destaging delay [s] This parameter defines the time that PID error r2273 must exceed motor
staging hysteresis P2373 before destaging occurs.
Range: 0 to 650 (default setting: 30)
P2376[0...2] Motor staging delay override
[%]
P2376 as a percentage of PID setpoint. When the PID error r2273 ex-
ceeds this value, a motor is staged / destaged irrespective of the delay
timers.
Range: 0.0 to 200.0 (default setting: 25.0)
Note
: The value of this parameter must always be larger than staging
hysteresis P2373.
P2377[0...2] Motor staging lockout timer [s] This parameter defines the time for which delay override is prevented after
a motor has been staged or destaged.
Range: 0 to 650 (default setting: 30)

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
16 Operating Manual, 05/2018, A5E43416874-002
Parameter
Function
Setting
r4000 Multi-pump control status word This parameter defines the bitwise status word for the multi-pump control
function.
Bit 00: ON/OFF1 (output to P0840)
Bit 01: Motor 1 switching on (output to P0731)
Bit 02: Motor 2 switching on (output to P0732)
Bit 03: Motor 3 switching on (output to P0733)
Bit 04: Motor 4 switching on (output to P0734)
Bit 05: Switching-in/-out operation in progress
Bit 06: No idle motor is running
Bit 07: OFF2 (output to P0845)
P4011 Multi-pump control enable This parameter controls the execution of the multi-pump function.
0: Disable the multi-pump control function
1: Enable the multi-pump control function
Range: 0 to 1 (default setting: 1)
P4012 Multi-pump control motor selec-
tion mode
This parameter controls the selection mode for switching in/out motors
0: Fixed sequence (switching-in: M1, M2, M3, M4; switching-out: M4, M3,
M2, M1)
1: Absolute operating hours
Range: 0 to 1 (default setting: 0)
P4013 Multi-pump control motor num-
ber configuration
This parameter configures the total number of existing motors. The value
change to this parameter takes effect after the next time the script is started.
Range: 1 to 4 (default setting: 4)
Note: Before changing the value of P4013, change the value of P4002 to 0
first. After the value of P4013 is changed, re-power on the inverter.
P4014 Multi-pump control switch-out
offset [Hz]
The offset value is the threshold for switching out a motor. When actual
frequency r0021 < P1080 + P4014, the inverter will start to check whether
the switching out operation is necessary according to PID error r2273.
Default setting: 0
P4020 Multi-pump control switching
delay time [ms]
After the multi-pump function is enabled, when switching in/out motors, the
inverter first switches off the directly controlled motor by OFF2, and then
switches off the corresponding relay. This parameter is used to configure
the delay time between the two operations.
Default setting: 800
P4021 Multi-pump control switch-out
time [ms]
After the relay of the directly controlled motor is switched off, the inverter
switches on the relay of the motor to be controlled. This parameter is used
to configure the delay time between the two operations.
Default setting: 1500
P4022 Multi-pump control switch-in
time [ms]
After the relay of the motor to be controlled is switched on, the inverter
switches on the motor to be controlled by ON/OFF1. This parameter is
used to configure the delay time between the two operations.
Default setting: 1500
P4024 Multi-pump control max time for
continuous operation [h]
The motor cycling function will be triggered if the continuous operating
hours of a motor exceed the threshold. This parameter is used to config-
ure the threshold value.
Default setting: 24 (minimum value: 0.1)
r4026 Multi-pump control absolute
operating hours: motor 1 [h]
Absolute operating hours timer for motor 1. It will be cleared after re-power
on.

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 17
Parameter
Function
Setting
r4027 Multi-pump control absolute
operating hours: motor 2 [h]
Absolute operating hours timer for motor 2. It will be cleared after re-power on.
r4028 Multi-pump control absolute
operating hours: motor 3 [h]
Absolute operating hours timer for motor 3. It will be cleared after re-power on.
r4029 Multi-pump control absolute
operating hours: motor 4 [h]
Absolute operating hours timer for motor 4. It will be cleared after re-power on.
r4062 Inverter-controlled motor num-
ber
This parameter displays which motor is controlled by the inverter.

Pump switch-in/switch-out
SINAMICS V20 multi-pump control
18 Operating Manual, 05/2018, A5E43416874-002

SINAMICS V20 multi-pump control
Operating Manual, 05/2018, A5E43416874-002 19
Stop mode
3
Two stop modes are available as follows:
●Normal stop: All pumps running in line system operation are switched off at the same time
as soon as the stop command is received. The pump in inverter operation stops under
the control of the inverter.
●Sequence stop: The pumps running in line system operation stop one by one in the
reverse sequence in which they are switched on. There is a delay time between every
pump stop. The pump in inverter operation stops under the control of the inverter after the
other pumps are switched off.
After the OFF command is received, the pumps are switched off in either of the two stop
modes:
●With OFF1 command received, the pump stop mode is selected in P2370 as follows:
–P2370 = 0: normal stop
–P2370 = 1: sequence stop
●With OFF2/OFF3 command received, the pumps are switched off with normal stop.

Stop mode
SINAMICS V20 multi-pump control
20 Operating Manual, 05/2018, A5E43416874-002
Setting parameters
Parameter
Function
Setting
P0731[0...2] BI: Function of digital output 1 Defines source of digital output 1.
Range: 0 to 4294967295 (default setting: 4000.1)
P0732[0...2] BI: Function of digital output 2 Defines source of digital output 2.
Range: 0 to 4294967295 (default setting: 4000.2)
P0733[0...2] BI: Function of digital output 3 Defines source of digital output 3.
Range: 0 to 4294967295 (default setting: 4000.3)
P0734[0...2] BI: Function of digital output 4 Defines source of digital output 4.
Range: 0 to 4294967295 (default setting: 4000.4)
P2370[0...2] Motor staging stop mode This parameter selects stop mode for external motors when motor
staging is in use.
= 0: Normal stop
= 1: Sequence stop
Range: 0 to 1 (default setting: 0)
r4000 Multi-pump control status word This parameter defines the bitwise status word for the multi-pump
control function.
Bit 00: ON/OFF1 (output to P0840)
Bit 01: Motor 1 switching on (output to P0731)
Bit 02: Motor 2 switching on (output to P0732)
Bit 03: Motor 3 switching on (output to P0733)
Bit 04: Motor 4 switching on (output to P0734)
Bit 05: Switching-in/-out operation in progress
Bit 06: No idle motor is running
Bit 07: OFF2 (output to P0845)
P4023 Multi-pump control disconnection
lockout time [h]
After a switching operation is finished, the operation will be locked out
for a certain time. This parameter is used to configure the lockout time.
Default setting: 0
r4062
Inverter-controlled motor number
This parameter displays which motor is controlled by the inverter.