Kuhse KEA 252 PA User manual

______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
Operating instructions
Automatic start/stop system for parallel systems
for product: KEA 252 PA
File: BA_KEA 252 PA_EN_Ver 2016-07-01 (replaces version 2014-09-22)
__________________________________________________________________
1. Use and basic operation
The KEA 252 PA automatic system is used in systems in which several gensets are operated in parallel. It can
be used as a peak load genset, CHP module, for emergency power systems, for pure standalone operation or
all resulting combinations. It is designed so that genset fields that equipped with this automatic system can be
easily cascaded. A central controller must take over the activating of any mains and coupling switched and the
selection of gensets.
The synchronisation unit, the power and cos φ controller, the load distribution in standalone operation and the
power failure protection in accordance with VDE-AR-N 4105 and the voltage monitor (from Version 8) according
to E VDE-AR-N 4120 during the mains parallel operation are included. All functions and displays required in
VDE 0108, including the drag indicator display, are fulfilled by this automatic system. Also, the requirements for
the control of a diesel motor have been fulfilled in accordance with VdS 2100-22.
The function of the output relays and the parameters can be set with a PC.
Because the KEA 252 has the same dimensions and fastenings as its predecessor, replacement is simple.
Four dedicated operating messages and four programmable operating displays can be labelled by re-
placeable paper strips and are indicated by LEDs. All other alarms and all actual and reference values are
shown on the display. The illuminated display shows two lines with up to 16 characters with a character height
of 10 mm so that it can be read from a greater distance.
The parameterisation can be carried out via the keys and the display or via the serial interface (LWL or USB
–automatic switching) with the parameterisation program PARAWIN.
Two CAN bus interfaces are available for coupling to a ZLT and to a motor management system. However, the
protocol for the motor management system must be known and implemented.
The automatic system can be cost-effectively integrated in a communication system (KUHSE TELEMON) via the
public telephone or GSM mains by plugging in a modem.
Important note! The functions for the mains parallel operation deviate in part from the previous model KEA 102
PA because of compliance with the new VDE regulation.
GEN.VOLTAGE [V]
231 233 229

Operating instructions for KEA 252 PA 2 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
2. Revision history
Version
Changed
15-03-16
First edition
01-07-2016
Change the header
3. Content
1. Use and basic operation........................................................................................................................ 1
2. Revision history...................................................................................................................................... 2
3. Content .................................................................................................................................................. 2
4. Warnings................................................................................................................................................ 4
4.1. Regulations and instructions.......................................................................................................... 4
4.2. Installation and commissioning...................................................................................................... 4
4.3. Connections................................................................................................................................... 4
4.4. Battery and supply voltage ............................................................................................................ 4
4.5. Coils............................................................................................................................................... 4
5. Functions ............................................................................................................................................... 5
6. Function differences to the preceding model KEA 102 PA.................................................................... 5
7. Automatic operation............................................................................................................................... 5
7.1. Back synchronisation..................................................................................................................... 5
7.2. Peak load operation....................................................................................................................... 5
8. Test operation........................................................................................................................................ 6
9. Basic operation of automatic system..................................................................................................... 6
9.1. Operation of the display................................................................................................................. 6
9.2. Display contrast setting.................................................................................................................. 6
10. Parameterisation.................................................................................................................................... 7
11. Display and control elements................................................................................................................. 8
11.1. Monitoring on ................................................................................................................................. 8
11.2. Automatic system locked............................................................................................................... 8
11.3. Start control.................................................................................................................................... 8
11.4. Fault............................................................................................................................................... 9
11.5. Four programmable displays ......................................................................................................... 9
11.6. Mimic diagram / Voltage monitor ................................................................................................... 9
11.7. Keys for operating mode................................................................................................................ 9
11.8. Start key......................................................................................................................................... 9
11.9. LED Test button............................................................................................................................. 9
11.10. Alarm Off button........................................................................................................................... 10
12. Operating modes ................................................................................................................................. 10
12.1. Controlling the auxiliary drives..................................................................................................... 10
12.2. Off operating mode...................................................................................................................... 10
12.3. Manual operating mode............................................................................................................... 10
12.3.1. Manual speed adjustment........................................................................................................ 10
12.3.2. Manual voltage adjustment...................................................................................................... 10
12.4. Auto operating mode.................................................................................................................... 11
12.4.1. Peak load without mains failure control function ..................................................................... 11
12.4.2. Standalone operation without peak load.................................................................................. 11

Operating instructions for KEA 252 PA 3 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
12.4.3. Peak load with mains failure control function .......................................................................... 11
12.4.4. Sprinkler prompt....................................................................................................................... 11
12.5. Test operating mode.................................................................................................................... 11
12.5.1. General.................................................................................................................................... 11
12.5.2. Generator operation................................................................................................................. 11
12.6. Sprinkler operation....................................................................................................................... 12
13. Alarm messages.................................................................................................................................. 12
13.1. Display and acknowledgement of alarms.................................................................................... 12
13.2. Description of the alarms............................................................................................................. 13
13.2.1. Engine does not switch off....................................................................................................... 13
13.2.2. False start................................................................................................................................ 13
13.2.3. Motor fault................................................................................................................................ 13
13.2.4. Overspeed ............................................................................................................................... 13
13.2.5. Alarms 13 and 14..................................................................................................................... 13
13.2.6. Battery voltage monitor............................................................................................................ 13
13.2.7. Analogue input alarms............................................................................................................. 13
13.2.8. Generator circuit breaker tripped............................................................................................. 13
13.2.9. Generator switch-off impeded.................................................................................................. 13
13.2.10. Alarms of the voltage monitor.................................................................................................. 13
13.2.11. Monitoring the flows................................................................................................................. 13
13.2.12. Synchronisation fault ............................................................................................................... 14
13.2.13. Power controller defective ....................................................................................................... 14
13.2.14. Cos φ controller defective........................................................................................................ 14
13.2.15. Reverse power......................................................................................................................... 14
13.2.16. Maintenance interval reached.................................................................................................. 14
13.2.17. Maintenance interval exceeded............................................................................................... 14
14. Display of the actual values................................................................................................................. 15
15. Further functions.................................................................................................................................. 16
15.1. Frequency controller in standalone operation ............................................................................. 16
15.2. Voltage controller in standalone operation.................................................................................. 16
15.3.Power controller........................................................................................................................... 17
15.4. Cos φ controller ........................................................................................................................... 17
15.5. Synchronisation unit .................................................................................................................... 17
15.6. Quick stop (Emergency Stop/Emergency Off)............................................................................. 17
15.7.Start program............................................................................................................................... 17
16. Technical data ..................................................................................................................................... 18
16.1. KEA controller.............................................................................................................................. 18
16.2. Analogue inputs and outputs ....................................................................................................... 18
16.3. Relay unit KRK-12....................................................................................................................... 18
16.4. Additional relay unit KRK-27........................................................................................................ 18
16.5. Serial interfaces........................................................................................................................... 18
16.6. KNG for coupling to other systems (option)................................................................................. 18
17. Thermal overload tripping characteristic curve.................................................................................... 19
18. Connection diagrams........................................................................................................................... 20
18.1. Connection diagram KEA 252 PA................................................................................................ 20
18.2. Analogue inputs connection......................................................................................................... 21
18.3. Connection diagram KRK-12/27 (KRK-27 optional).................................................................... 22
18.4. Terminal layout KEA 252 PA....................................................................................................... 23
18.5. Circuit board KRK-12/27 (KRK-27 optional)................................................................................ 24
18.6. Drilling template scale 1:1 –print out without scaling.................................................................. 25

Operating instructions for KEA 252 PA 4 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
4. Warnings
4.1. Regulations and instructions
1. Applicable regulations, especially those of the VDE must be observed.
2. The information in the service instructions must be complied with prior to commissioning.
3. The parameterisation of the unit must be carried out in such a way that endangerment of persons and
property is excluded.
4.2. Installation and commissioning
The installation and commissioning must only be carried out by sufficiently qualified personnel.
4.3. Connections
1. The connection of the unit must be carried out carefully, as a wrong connection could lead to the destruc-
tion of the unit. The connection regulations must be observed!
2. The PE(N) must be connected to the terminal 5 of X403.
3. The shields of the analogue signals must only be connected to the earthing screw next to terminal strip
X401 and otherwise no other connection to metal parts.
4. Converter connections k must be connected to the protective conductor.
4.4. Battery and supply voltage
1. If the battery has to be disconnected, the charging unit must be switched off.
2. The battery negative potential must be earthed at the input terminal on the switchboard. The minimum
cross-section is 10 mm2.
3. The supply voltage (12 or 24 V DC) is selected using a switch located on the KRK-12.
4. If the supply voltage of the automatic system was switched off, it must only be switched on again after
approx. 20 seconds.
5. The leakage current of the noise filter upon a 2-phase voltage loss is 22 mA.
4.5. Coils
All the coils must be provided with a freewheeling diode (for DC voltage) or with a quench circuit matching the
inductance of the coil. This also applies for all relays and inductances that are used in the switchgear or are
externally activated.

Operating instructions for KEA 252 PA 5 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
5. Functions
The following functions are implemented:
1. Start/stop for diesel and gas motor with check of start preconditions
2. Sensors for busbar and generator voltage, frequency and rotating field (asymmetry). A second voltage
and frequency sensor pair is provided for pure emergency power operation (consumer protection).
3. Generator current sensor: Overload, short-circuit, asymmetric load and thermal overload (bimetallic relay)
4. 64 alarm messages, 35 of which are parametrised specific to the customer (text and control) and the con-
trol of another 4 alarms can be parametrised
5. Event memory for 127 messages with real-time clock stamp
6. Integrated check synchroniser and synchronisation unit (2-channel)
7. Integrated power controller
8. Load distribution
9. Integrated cos φ controller
10.Sealable power failure protection. The following can be monitored:
11.Static undervoltage/overvoltage
12.Overvoltage as an average value over 10 minutes
13.Static underfrequency/overfrequency
14.In addition to the requirements in accordance with VDE-AR-N 4105:
15.Vector shift
16.Voltage and frequency change du/dt and df/dt
17.Control of a diesel motor in accordance with VdS 2100-22:2008-11.
18.Battery monitor and four additional analogue inputs for direct recording of analogue sensors
19.Control of two alarms via limit values for each analogue input
20.Two potential-free analogue outputs, e.g. for direct control of speed, cos φ or other controllers
21.Parameterisation via LWL or USB interface –automatic switching –or direct via the keys and the display
22.Two CAN bus interfaces
23.Diverse expansion options: Modem, pressure control, Profibus coupling, etc.
6. Function differences to the preceding model KEA 102 PA
The automatic system is primarily designed for the use of multi-module systems. All functions are optimally
implemented for this use. However, it can also be used in single systems. Additional functions of the KEA 201
SPL are provided because of the VDE specifications concerning mains parallel operation. Thus, compared with
the previous model KEA 102 PA, functional deviations occur.
As no input is provided for peak load operation for the control designed for the parallel operation of gensets
among themselves, different functions are activated due to the sequence of the MAINS IS ON and START COMMAND
signals.
7. Automatic operation
7.1. Back synchronisation
Back synchronisation can be carried out by an external control. If the mains (external) has been synchronised to
do this after standalone operation, the load of the consumers is slowly transferred to the mains. The external
control can then remove the start command for a required low load of the genset so the generator switches off
and the genset shuts down after the run-on time. If the start command is still pending, the system switches to
peak load operation.
7.2. Peak load operation
The sequence of the signal transmission of start command and mains coupling on specifies this functional
process. If the start command is issued with a mains coupling on signal available, peak load operation is imme-
diately started. If the mains coupling on signal is issued after the start command pending (the system is in
standalone operation), the back synchronisation is first initiated by transferring the consumer load to the mains
and then switches to peak load operation when the start is still pending.

Operating instructions for KEA 252 PA 6 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
8. Test operation
As test operation mainly provides for manual operation, some of the specified automatic processes of the VDE
can be manually oversteered during peak load operation. For this reason, only auto operating mode and not test
mode should be selected during peak load operation (the start command and the mains coupling on signal are
pending) to maintain operation in accordance with the VDE specifications.
9. Basic operation of automatic system
The automatic system can be operated very easily, as with all previous models and without menu navigation.
The operating mode can be selected using four buttons. In manual and test mode, the generator is switched on
and off using the buttons arranged in the mimic diagram.
In Manual mode, the Start button is programmed for a manual start. The LED Test and Alarm Off buttons are
self-explanatory.
During normal operation, the display is only required to display pending alarms and the actual values. The menu
is also easy to use here: Use the [→] and [←] keys to select the required group (alarms or actual values) and
use the [↑] and [↓] keys to display the required actual value or pending alarms.
9.1. Operation of the display
You select a parameter or a value just like you read a book. The different groups are saved as 'pages'. The
groups can be scrolled through forwards and backwards using the [→] and [←] cursor keys. Within a group,
they are read like 'lines' of a text from top to bottom. The lines are selected by pressing the cursor buttons [↓]
(down) and [↑] (up). If the ‘end of the page’ is reached, it starts again from the top or the bottom.
To change a parameter, first enter the valid ID number. A Group 0 parameter, -General Parameters-, can be
changed without entering a valid ID number. A parameter is changed as described above.
1. Select the group of the desired parameters with the [←] and [→] buttons.
2. The display with the required parameter is selected using the [↑] or [↓] key. A maximum of two parameters
are displayed.
3. Press the Off and LED Test buttons (function Para on or Para off) at the same time. The parameterisation
mode is initiated and is indicated by the solid cursor [ █ ]. The group or the displayed parameter may no
longer be deselected.
4. The required parameter is selected with the [↑] or [↓] key.
5. By simultaneously pressing OFF and ALARM OFF (ENTER function), the displayed line is defined, which is
indicated by the cursor shape that then displays the parameter position to be chan
]. The line may no longer deselected.
6. The parameter position to be changed is selected using the [←] and [→] cursor buttons and a numeric
parameter is increased or decreased by 1 using the [↑] and [↓] buttons. A parameter that is displayed by a
letter (prefix, alarm coding), is changed using these buttons in reverse order.
7. The displayed parameter is applied by simultaneously pressing Off and Alarm off. If you want to cancel the
parameterisation step, simultaneously press the Off and LED Test buttons instead of Off and ALARM OFF.
9.2. Display contrast setting
The display contrast is increased by holding the LED Test button and pressing the [↑] button (display becomes
darker) or decreased by holding the [↓] button (display becomes brighter).

Operating instructions for KEA 252 PA 7 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
10. Parameterisation
The parameterisation is described in the service manual. The parameterisation of the basic settings, group 0, is
explained in the following. These parameters can be changed without an ID number. Group 0 is selected using
the [←] and [→] keys. The basic parameter group is displayed in the following.
KEA 252 PA
KUHSE GmbH
90567 ORDER NO
12345 F-NUMBER
SOFTWARE
010/01/07/2014
***** IDENT-NO
***** PIN NUMBER
LIGHTING
120 sec DURATION
DISPLAY PARAMETER
+ [+]YES [-]NO
....LANGUAGE
0 0=DE, 1=UK
Automatic type display
Display the Kuhse order number and the production number of the automatic
system. This information is necessary for any questions.
Version number and date of the software.
Entry of the ID and the PIN number. The parameterisation is described in the
service manual. The parameters of this group can be changed without a valid ID
number.
Switch-on time of the display lighting. After pressing any button, the background
lighting is switched on for the configured time. The switch-off delay starts after the
last button is pressed. The time can be entered in the range between 10 and 2400
seconds with increments of 10 seconds. With pending alarms, the lighting is not
switched off.
During normal operation, it is useful to quickly use the buttons [←] and [→] to toggle
between the display of the actual values and the pending alarms. If this parameter
is set to [-], the groups with the parameters are skipped.
If a parameter is to be changed, [+] must be entered here so that the parameter
groups are displayed.
Regardless of this setting, you can use the keyboard shortcut LED Test and [←] to
switch to Actual values and with LED Test and [→] to switch to Pending Alarms.
All texts are saved in two languages (German and English here). The language is
selected using this parameter. The entry [0] selects the text in German and [1]
selects the text in English.
03/05/2014
12:17:35
Display of date and time. The automatic system is equipped with a battery-buffered
hardware clock that bridges any voltage failure.

Operating instructions for KEA 252 PA 8 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
11. Display and control elements
Display and control elements:
A1: 4 important operating displays A2: 4 programmable displays
B1: Generator voltage B2: Generator ON B3: Generator OFF B4: Generator ON display
C1: Button for parameterisation C2: Button for operating mode C3: Other buttons
D1: Display, illuminates, 2 lines, each with 16 characters, character height 10 mm D2: Cursor buttons
Parameterisation
Off and LED Test buttons
Function: PARA ON
Off and Alarm Off buttons
Function: ENTER
Contrast setting
LED Test and ↑ buttons
More contrast
LED Test and ↓ buttons
Less contrast
11.1. Monitoring on
This green display (after the genset start-up) signals the release of the operating-dependent delayed alarms. As
soon as the motor has started up, this display flashes until the monitoring is enabled. The display goes out at
the beginning of the shut-down process.
11.2. Automatic system locked
This red display illuminates if an alarm to be switched off has elapsed or the external quick stop was actuated.
In order to unlock the system, the Off operating mode must be selected. If the signal cannot be cleared even in
Off, the external quick stop is still active.
11.3. Start control
The message will be activated as soon as a start request is present in automatic mode or if manual or test mode
has been selected. The display flashes as long as there is no start release. The display goes out as soon as the
genset exceeds the ignition speed during start-up (recognised from the D+ signal of the generator or from the
revolution transmitter signal). Switching on the starter is then inhibited, even if attempted manually. The starting
generator voltage interrupts the start but does not cause the START CONTROL indicator to extinguish.

Operating instructions for KEA 252 PA 9 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
11.4. Fault
This yellow indicator flashes and the horn sounds once a new alarm occurs. Only the horn signal is acknowl-
edged using the Alarm Off key. The display automatically shows the page with the actual alarms.
If there are multiple alarms pending at the same time, the alarm to be acknowledged is selected using the [↑]
and [↓] cursor keys. For identification purposes, 'New' at the start of the line stands for an unacknowledged or
'ACKN' for an already acknowledged alarm.
The yellow indicator lights up permanently once all alarms are acknowledged and goes out after all alarms are
cleared.
11.5. Four programmable displays
The functions of the four indicators of the right row are programmable within broad limits. You can display
selected, important alarms or used them as operating messages. Despite the direct display, alarms are also
shown on the display.
In addition, each of the 29 digital inputs can be used as an input for an parametrised operating message.
11.6. Mimic diagram / Voltage monitor
The mimic diagram displays the generator and the busbar. The position of the generator circuit breaker is indi-
cated through the green display underneath the keys. Four red and two green indicators are provided for moni-
toring the generator voltage. They show whether the voltage is in the nominal range or whether and which
deviations are present. These indicators arranged under the generator symbol signal:
The green indicators signal that the monitored functions of voltage and frequency are within the tolerances. The
red LEDs only indicate a voltage error if the respective function is enabled for monitoring
All functions (U<, U>, f<, f>) and the response values of the voltage monitors can be parametrised. The un-
dervoltage display also appears if the measuring voltage is connected with a left rotation field or if the voltage
has too large an asymmetry of the vectors.
If an enabled monitoring signals a deviation from the nominal range, the respective red indicator flashes. Both
green indicators remain switched on for the duration of the drop-out delay of the monitor output. After the delay
expires, they go out and the red indicator illuminates continuously. The function is now processed internally.
As soon as the voltage and frequency values are within the tolerance range again, the red display goes out
immediately and a release delay time is started. During this time, both green indicators flash that start illuminat-
ing continuously when the time has expired. The voltage is then recognised internally as ‘good’.
The indicators are switched off if the Off operating mode is selected or if there is no start command pending in
automatic operation.
11.7. Keys for operating mode
The respective operating mode is selected by actuating the Off, Manual, Auto or Test keys. The selection can
be blocked by a key switch (via an input on the additional relay unit).
The speed can be manually set in the Manual and Test operating modes. For this, the speed or the power must
be displayed under actual values and the Manual or Test key must be kept pressed. The speed signal for the
machine can be increased or decreased with the [↑] or [↓] cursor keys.
11.8. Start key
The motor can be started in MANUAL operating mode by actuating this button. If the start program for a gas motor
is parametrised, the start sequence is processed accordingly. If the motor needs to be preheated, the pre-
heating device must be externally controlled. Actuating this key is ineffective when the machine is running or
also in any other selected operating mode.
11.9. LED Test button
The functioning of all LEDs of the automatic system can be tested by this button. It is also used as a multifunc-
tion button when parametrising and for the contrast setting.

Operating instructions for KEA 252 PA 10 / 25 File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: [phone]
[email protected]e
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: [phone]
www.kuhse.de
11.10. Alarm Off button
An actuation pulse from this key is used to switch off the acoustic signal issued by a new alarm. If you press it a
second time, the alarm is deleted if the alarm-triggering event is no longer pending. Additional functions are
described in the alarm messages document.
12. Operating modes
The operating modes are selected by four keys. The selected operating mode is signalled by the LED above the
key. The keys can be electrically locked by an input (e.g. by connection of an external key-operated control
switch) so any unauthorised or random change of a defined operating mode is prevented. The operating modes
described below can be selected using the keys.
12.1. Controlling the auxiliary drives
Before each start (if parameterised), a relay with the Auxiliary drives on function picks up. The Start Control
indicator flashes. If the start is released (e.g. gas tightness is checked, exhaust flap open, lubricating pressure is
reached), feedback must be provided. The flashing Start Control indicator lights up permanently after the start
release is issued (when the machine is at a standstill) and the engine can be started.
If no start release is required, the input must be permanently connected with the negative potential as
otherwise no start is carried out.
12.2. Off operating mode
The Off position is automatically selected (reset function) during the application of battery voltage in order to
prevent the triggering of an unintentional start-up. When switching to OFF from another operating mode:
a genset operation is immediately ended
Previously displayed alarms, except fault messages 13 and 14, are deleted as long as the respective
alarm contact is still active
The automatic system is unlocked, even if there is no signal on the quick stop input (emergency stop).
12.3. Manual operating mode
After selecting the Manual operating mode, any auxiliary drives are switched on and, after start enable carried
out, the motor can be started with the Start key. If the generator voltage is within the parametrised nominal
values and no alarm that switches off the generator is pending, genset operation can be switched to with the
Gen. On key (I). The automatic system checks that the busbar is voltage-free and that no switch is switched on
which must be locked out. If this is the case, the switch is directly switched on, otherwise the synchronisation is
selected. The generator is switched off after actuating the Gen. Off key (O). All controllers (power, voltage,
frequency, speed, Cos phi) are switched off.
The actuation of the On key remains ineffective if the generator voltage does not lie within the specified limits.
An external start order does not lead to the automatic switch-on of the generator.
In order to switch off the genset, the Off or (if the automatic start is not present) Automatic operating mode must
be selected.
12.3.1. Manual speed adjustment
The reference value for an electronic speed controller can be set in this Manual operating mode (e.g. during
maintenance of the motor). To do so, the speed must be displayed under actual values and the Manual key
must be kept pressed. The speed signal for the machine can be increased or decreased with the [↑] or [↓]
cursor keys.
12.3.2. Manual voltage adjustment
The voltage can be set manually. To do so, the generator voltage must be displayed under actual values and
the Manual or Test key must be kept pressed. The control voltage for the generator voltage controller can be
increased or decreased with the [ ↑ ] or [ ↓ ] cursor keys.