Motrona BY340, BY641 Operating Manual

Operating Manual

motrona GmbH, Zeppelinstraße 16, DE - 78244 Gottmadingen, Tel. [phone], Fax [phone], [e-mail], www.motrona.com

BY340 / BY641

High performance low cost synchronous controllers for one slave axis

Product Features:

 Precision angular synchronization and speed ratio control
 High accuracy due to high feedback frequency range

(300 kHz with TTL encoders and 200 kHz with HTL encoders)

 Full remote phase control by Index pulse operation, Trim functions etc.
 Four programmable alert outputs
 Most compact unit including operator panel for direct

access and RS232 interface for remote access

 PROFIBUS DP interface available (option)
 Analog output, configurable for voltage or current operation
 24 VAC / 17 … 40 VDC power supply

Available Devices:

 BY340: Synchronizer with speed ratio setting by keypad,

14 bit analog output and 4 power transistor outputs for alerts

 BY641: Synchronizer with features like BY340, but additional front

thumbwheel switches for speed ratio and 4 relay outputs for alerts

By340_04b_oi_e.doc / Apr-16 Page 2 / 42

Version:

Description:

BY34002a/April 07/mb/hk

First edition

BY34002b/July 07/mb/hk

Small corrections and supplements

BY34002c/Nov 11/sm

Changing relay output BY641

BY34002d/Feb 12/pp

Small corrections and supplements

BY34003a / Jun 12 / TJ

New parameter F08.071; new actual display value Index Correction

BY34004a / March 15 / TJ

New parameter F03.029 … 031, new master speed display

By340_04b_oi/Dez-15/ag

Notice for analog output supplemented „only V or mA (not both together)”

„Safety Instructions and Responsibility“ and „Legal notices“ added
„Technical specifications“ and manual-design updated

Legal notices:

All contents included in this manual are protected by the terms of use and copyrights of motrona GmbH. Any
reproduction, modification, usage or publication in other electronic and printed media as well as in the internet
requires prior written authorization by motrona GmbH.

By340_04b_oi_e.doc / Apr-16 Page 3 / 42

Table of Contents

1. Safety Instructions and Responsibility ............................................................................................ 4

1.1 General Safety Instructions ......................................................................................................................... 4

1.2 Use according to the intended purpose ...................................................................................................... 4

1.3 Installation ................................................................................................................................................... 5

1.4 Cleaning, Maintenance and Service Notes ................................................................................................ 5

2. Available Models ........................................................................................................................... 6

3. Introduction .................................................................................................................................... 7

4. Electrical Connections .................................................................................................................... 8

4.1. Power Supply ............................................................................................................................................. 10

4.2. Auxiliary Outputs for Encoder Supply ....................................................................................................... 10

4.3. Impulse Inputs for Incremental Encoders ................................................................................................. 10

4.4. Control Inputs Cont.1 – Cont.4 .................................................................................................................. 11

4.5. Switching Outputs K1 – K4 ....................................................................................................................... 11

4.6. Serial Interface .......................................................................................................................................... 11

4.7. Analog Output ............................................................................................................................................ 11

5. Principle of Operation ................................................................................................................... 12

5.1. Synchronization ......................................................................................................................................... 12

5.2. Mechanical Phase and Position Considerations ...................................................................................... 13

6. Operating Modes .......................................................................................................................... 14

7. Keypad Operation ......................................................................................................................... 15

7.1. Normal Operation ...................................................................................................................................... 15

7.2. General Setup Procedure .......................................................................................................................... 15

7.3. Direct Fast Access to Speed Ratio Setting ............................................................................................... 16

7.4. Change of Parameter Values on the Numeric Level ................................................................................ 17

7.5. Code Protection against Unauthorized Keypad Access ........................................................................... 18

7.6. Return from the Programming Levels and Time-Out Function ................................................................. 18

7.7. Reset all Parameters to Factory Default Values ...................................................................................... 18

8. Menu Structure and Description of Parameters ............................................................................ 19

8.1. Summary of the Menu ............................................................................................................................... 19

8.2. Description of the Parameters .................................................................................................................. 21

9. Description of Commands and Outputs ......................................................................................... 32

9.1. Commands ................................................................................................................................................. 32

9.2. Outputs ....................................................................................................................................................... 33

9.3. Display of Actual Values ........................................................................................................................... 34

10. Steps for Commissioning .............................................................................................................. 35

10.1. Running the Adjust menu .......................................................................................................................... 36

10.2. Set Directions of Rotation ......................................................................................................................... 37

10.3. Tuning the Analog Output ......................................................................................................................... 37

10.4. Setting of the Proportional Gain ............................................................................................................... 38

10.5. Hints for final operation ............................................................................................................................ 38

11. Appendix for model BY 641 .......................................................................................................... 39

11.1. Relay Outputs ............................................................................................................................................ 39

11.2. Front Thumbwheel Switches..................................................................................................................... 39

12. Technical Specifications & Dimensions ........................................................................................ 40

12.1. Dimensions of model BY340: .................................................................................................................... 41

12.2. Dimensions of model BY641: .................................................................................................................... 42

By340_04b_oi_e.doc / Apr-16 Page 4 / 42

1. Safety Instructions and Responsibility

1.1 General Safety Instructions

This operation manual is a significant component of the unit and includes important rules and
hints about the installation, function and usage. Non-observance can result in damage and/or
impairment of the functions to the unit or the machine or even in injury to persons using the
equipment!

Please read the following instructions carefully before operating the device and observe all
safety and warning instructions! Keep the manual for later use.

A pertinent qualification of the respective staff is a fundamental requirement in order to use
these manual. The unit must be installed, connected and put into operation by a qualified
electrician.

Liability exclusion: The manufacturer is not liable for personal injury and/or damage to property
and for consequential damage, due to incorrect handling, installation and operation. Further
claims, due to errors in the operation manual as well as misinterpretations are excluded from
liability.

In addition the manufacturer reserve the right to modify the hardware, software or operation
manual at any time and without prior notice. Therefore, there might be minor differences
between the unit and the descriptions in operation manual.

The raiser respectively positioner is exclusively responsible for the safety of the system and
equipment where the unit will be integrated.

During installation or maintenance all general and also all country- and application-specific
safety rules and standards must be observed.

If the device is used in processes, where a failure or faulty operation could damage the system
or injure persons, appropriate precautions to avoid such consequences must be taken.

1.2 Use according to the intended purpose

The unit is intended exclusively for use in industrial machines, constructions and systems. Non­conforming usage does not correspond to the provisions and lies within the sole responsibility
of the user. The manufacturer is not liable for damages which has arisen through unsuitable
and improper use.

Please note that device may only be installed in proper form and used in a technically perfect
condition - in accordance to the Technical Specifications (see chapter 12). The device is not
suitable for operation in explosion-proof areas or areas which are excluded by the EN 61010-1
standard.

By340_04b_oi_e.doc / Apr-16 Page 5 / 42

1.3 Installation

The device is only allowed to be installed and operated within the permissible temperature
range. Please ensure an adequate ventilation and avoid all direct contact between the device
and hot or aggressive gases and liquids.

Before installation or maintenance, the unit must be disconnected from all voltage-sources.
Further it must be ensured that no danger can arise by touching the disconnected voltage­sources.

Devices which are supplied by AC-voltages, must be connected exclusively by switches,
respectively circuit-breakers with the low voltage network. The switch or circuit-breaker must
be placed as near as possible to the device and further indicated as separator.

Incoming as well as outgoing wires and wires for extra low voltages (ELV) must be separated
from dangerous electrical cables (SELV circuits) by using a double resp. increased isolation.

All selected wires and isolations must be conform to the provided voltage- and temperature­ranges. Further all country- and application-specific standards, which are relevant for structure,
form and quality of the wires, must be ensured. Indications about the permissible wire cross­sections for wiring are described in the Technical Specifications (see chapter 12).

Before first start-up it must be ensured that all connections and wires are firmly seated and
secured in the screw terminals. All (inclusively unused) terminals must be fastened by turning
the relevant screws clockwise up to the stop.

Overvoltages at the connections must be limited to values in accordance to the overvoltage
category II.

For placement, wiring, environmental conditions as well as shielding and earthing/grounding of
the supply lines the general standards of industrial automation industry and the specific
shielding instructions of the manufacturer are valid. Please find all respective hints and rules on

www.motrona.com/download.html --> “[General EMC Rules for Wiring, Screening and

Earthing]”.

1.4 Cleaning, Maintenance and Service Notes

To clean the front of the unit please use only a slightly damp (not wet!), soft cloth. For the rear
no cleaning is necessary. For an unscheduled, individual cleaning of the rear the maintenance
staff or assembler is self-responsible.

During normal operation no maintenance is necessary. In case of unexpected problems, failures
or malfunctions the device must be shipped for back to the manufacturer for checking,
adjustment and reparation (if necessary). Unauthorized opening and repairing can have
negative effects or failures to the protection-measures of the unit.

By340_04b_oi_e.doc / Apr-16 Page 6 / 42

2. Available Models

The two models as shown below are available. Both models are fully similar in terms of
function and performance; however there is some difference with the size, the alert outputs
and the speed ratio setting.

BY340:

 Front size 96 x 48 mm (3.780’’ x 1.890’’)
 Speed ratio setting by keypad
 Analog output 14 bits
 4 power transistor outputs (alert)

BY641:

 Front size 96 x 96 mm (3.780’’ x 3.780’’)
 Speed ratio setting by keypad

or by front thumbwheel switches

 Analog output 14 bits
 4 power transistor outputs (alert)

and 4 relay outputs (alert)

Both models are suitable for front panel or operator desk mounting, by means of the included
mounting clamps.

Where you desire to mount the units on DIN rails inside a cabinet, please refer to the mounting
brackets type SM 300 and SM 600 available as accessories.

Figure: SM300 mounting bracket for DIN rail mounting of BY340 units

By340_04b_oi_e.doc / Apr-16 Page 7 / 42

3. Introduction

The BY340 / BY641 units are suitable to operate as electronic synchronous controllers with
speed-variable drives of any kind and any size, provided they dispose of an analog input to set
the speed. The operation is based on a Master / Slave principle.

The Master could basically be any moving part of a machine, provided there is a quadrature
incremental encoder signal available from the Master motion. The Slave would typically be a
speed-variable drive like an Inverter Drive or Servo Drive or DC Drive, but could also be a
hydraulic system with a servo valve or similar. In any case a quadrature feedback signal is also
necessary from the Slave.

The subsequent drawing shows an example of speed synchronization between two belts,
including automatic position adjustment by means of index sensors (optional).

Master
Encoder

Index
Master
(optional)

Index
Slave
(optional)

Slave
Encoder

Speed
variable
drive

0-10V

BY Controller

Master motor with
free motion under
remote control
(not controlled
by the BY unit)

 This manual first provides all basic instructions for operation of model BY340
 For operation of relays and thumbwheels with model BY641 see appendix

 For PC setup our “OS32” software is available on the CD included to delivery,

or on our homepage www.motrona.com

 For communication by PLC, IPC or by a remote operator terminal, please

observe the serial protocol details described in our separate SERPRO manual.

 PROFIBUS communication is possible with use of our gateway PB251.

By340_04b_oi_e.doc / Apr-16 Page 8 / 42

4. Electrical Connections

17 18 19 20 21 23 24 25 26 27 28 29 30 31 32

1 2 3 4 5 6 7 8 9 10

11 12

13

14

15 16

GND

GND

GND

GND

GND

+Vin

+5,2V aux.out

+5,2V aux. out

+24V aux.out

+24V aux. out

Slave, B

Slave, A

Master, B

Master, A

Master, /A

Master, /B

Slave, /A

Slave, /B

K2 out

K1 out

K3 out

K4 out

Cont. 1

Cont. 2

Cont. 4

Cont. 3

Com+ (K1-K4)

TxD (RS232)

Ana.out +/-10V

Ana.out 20 mA

RxD (RS232)

PROG

X1

X2

+5

-

A

/A

B

/B

+5

-

A

/A

B

/B

Master

Slave

Cont1
Cont2
Cont3
Cont4

Reset, Trim,

Index etc.

RxD
TxD
GND

RS232

-

+

24 V DC

Power supply

Com+ (K1 - K4)

K1 out

K2 out

K3 out

K4 out

+24

+24

+/-10V

20 mA

0V, GND

PROG

18
24

23

20

19

22

21

11

12

6

5

27

28

30

3

31

17

1

4

29
26

25

7

8

32

2

16

15

14

13

10

9

 

24 V AC

Example shows wiring
for encoders with 5 volts
power supply and
RS422 line driver output

Slave speed signal

Slave speed signal

Analogue
output

Alert 1

Alert 2 / Index ok

Max. Correction

Max. Frequency

Slave motor

Drive

By340_04b_oi_e.doc / Apr-16 Page 9 / 42

Terminal

Name

Function

01

GND

Common Ground Potential (0 V)

02

+5,2V out

Aux. output 5.2 V/150 mA* for encoder supply

03

+24V out

Aux. output 24 V/120 mA* for encoder supply

04

GND

Common Ground Potential (0 V)

05

Slave, /B

Slave encoder, channel /B (inverted track)

06

Slave, /A

Slave encoder, channel /A (inverted track)

07

Master, /B

Master encoder, channel /B (inverted track)

08

Master, /A

Master encoder, channel /A (inverted track)

09

K4 out

Digital output K4, transistor PNP 30 V, 350 mA

10

K3 out

Digital output K3, transistor PNP 30 V, 350 mA

11

Cont.4

Programmable control input

12

Cont.3

Programmable control input

13

(PROG)

(for download of new firmware only, not for general use)

14

RxD

Serial RS232 interface, input (Receive Data)

15

Ana.out 20 mA

Analog output 0 … 20 mA (Slave speed reference) **

16

Ana.out +/-10V

Analog output -10 V … 0 … +10 V (Slave speed reference) **

17

+Vin

Power supply input, +17 … 40 VDC or 24 VAC

18

+5,2V out

Aux. output 5.2 V/150 mA for encoder supply

19

+24V out

Aux. output 24 V/120 mA for encoder supply

20

GND

Common Ground Potential (0 V)

21

Slave, B

Slave encoder, channel B (non-inverted)

22

Slave, A

Slave encoder, channel A (non-inverted)

23

Master, B

Master encoder, channel B (non-inverted)

24

Master, A

Master encoder, channel A (non-inverted)

25

K2 out

Digital output K2, transistor PNP 30 V, 350 mA

26

K1 out

Digital output K1, transistor PNP 30 V, 350 mA

27

Cont.2

Programmable control input

28

Cont.1

Programmable control input

29

Com+ (K1-K4)

Common positive input for transistor outputs K1-K4

30

TxD

Serial RS232 interface, output (Transmit Data)

31

GND

Common Ground Potential (0 V)

32

GND

Common Ground Potential (0 V) for DC or AC power supply

*) 120 mA and 150 mA are per encoder, i.e. total maximum currents are 240 mA and 300 mA
**) In general, the voltage output terminal 16 should be used for the slave speed signal

By340_04b_oi_e.doc / Apr-16 Page 10 / 42

4.1. Power Supply

The BY340 synchronizer accepts both, a 17 … 40 VDC power or a 24 VAC power for supply via
terminals 17 and 1. The current consumption depends on the level of the input voltage and
some internal conditions; therefore it can vary in a range from 100 … 200 mA
(auxiliary currents taken from the unit for encoder supply not included).

4.2. Auxiliary Outputs for Encoder Supply

Terminals 2 and 18 provide an auxiliary output with approx. +5.2 VDC (300 mA totally).
Terminals 3 and 19 provide an auxiliary output with approx. +24 VDC (240 mA totally)

4.3. Impulse Inputs for Incremental Encoders

All input characteristics of the impulse inputs can be set by the parameter menu, for each of
the encoders separately. The unit works with quadrature information (A / B, 90°) only. In theory,
any of the following encoder characteristics would be applicable:

 Symmetric differential signals according to RS422 standard, however

1 V min. as differential voltage.

 TTL inputs at a level of 3.0 to 5 V (differential, with inverted signal)
 TTL inputs at a level of 3.0 to 5 V (single-ended) *)
 HTL signals at a 10 … 30 V level

(alternatively differential A, /A, B, /B, or single-ended A, B only)

 Pulses from photocells or proximity switches etc. providing a HTL level (10 … 30 V)
 Proximity switches according to NAMUR (2-wire) standard

(may need additional remote resistor)

*) requires special settings of the threshold parameters, see 8.2.9 “Special parameters F08”

 For trouble-free angular synchronization it is mandatory to use quadrature

encoders with channels A and B or with channels A, /A, and B, /B (90° phase
displacement).

 Where the impulse level is HTL (10 … 30 V) you can use either single-ended

signals (A and B only) or differential signals (A, /A, B, /B).

 Where the impulse level is TTL or RS422, it is strictly recommended to use

symmetric differential signals (with inverted channels /A and /B). Under
industrial environment conditions, single-ended TTL signals may cause
serious problems due to insufficient EMC immunity of the signal lines.

 All encoder input lines are internally terminated by pull-down resistors (8.5

kΩ). Where encoders with pure NPN outputs are used, corresponding pull-up
resistors must be available inside the encoder or externally to ensure proper

function (1 kΩ ... 3.3 kΩ).

By340_04b_oi_e.doc / Apr-16 Page 11 / 42

4.4. Control Inputs Cont.1 – Cont.4

These inputs can be configured for remote functions like Reset, Phase trimming, Index
evaluation or display selection purpose. All control inputs require HTL level. They can be
individually set to either NPN (switch to -) or PNP (switch to +) characteristics. For applications
where edge-triggered action is needed, the menu allows to set the active edge (rising or
falling). The Control inputs will also accept signals with Namur (2-wire) standard.

For reliable operation of the Control Inputs a minimum impulse duration of 50 µs.
must be ensured. Especially when using the Z marker pulse of a HTL encoder for
index tracking, please verify that this minimum duration can be kept even with
maximum speed of the machine.

4.5. Switching Outputs K1 – K4

BY340 provides four digital outputs to signal control states like “out of synchronization” or
“Index o.k.”. K1 – K4 are fast-switching and short-circuit-proof transistor outputs with a

switching capability of 5 – 30 volts / 350 mA each. The switching voltage of the outputs must
be applied remotely to the Com+ input (terminal 29).

4.6. Serial Interface

The serial RS232 interface can be used for the following purposes:

 Set-up of the unit by PC with use of the OS32 PC software
 Remote change of parameters during operation
 Remote readout of actual values by PLC or PC

The figure below explains the connection between the BY340 unit and a PC using the standard
Sub-D-9 serial connector

2
3

5

RxD RxD

TxDTxD

GND

screen

PC

BY 340

14

(Sub-D-9)

30

31

For details of the serial communication protocol, please refer to the special SERPRO manual.

4.7. Analog Output

The unit provides a voltage output of +/- 10 volts (load = 3 mA) or a current output of
0 … 20 mA (load = 0 … 270 Ohms), both at a resolution of 14 bits (13 bits + sign). With most
standard applications the voltage output is used as a speed reference signal, connected to the
speed input of the Slave drive.

 Important note: “voltage out” and “current out” must not be used together.

Please do never connect mA and V simultaneously!

 Continuous serial communication may temporary increase response times.

By340_04b_oi_e.doc / Apr-16 Page 12 / 42

5. Principle of Operation

5.1. Synchronization

The Synchro controller receives full positional information about the master axis by means of
the Master encoder. This incremental information can be scaled by means of the
Master Scaling Factor (subsequently named Factor1). From this information the unit can
calculate an analog speed output signal which is necessary to make the Slave axis exactly
follow to the Master.

The feedback of the actual position of the Slave axis is given by the Slave encoder. This
information uses a separate impulse scaling by means of the Slave Scaling Factor
(subsequently named Factor2).

Master position and Slave position are compared continuously, and the analog output is
updated correspondingly within very short cycle times of only about 100 µs. As a result, both
positions can be kept inside an error window of typically +/- 5 encoder increments (e.g. the
Slave may lead or lag the Master by a few encoder increments, but will never loose position)

It is easy to understand, that this kind of positional and angular synchronization includes at the
same time error-free speed synchronization of Master and Slave.

When we move the Master forward or reverse by a distance “dMaster”, at the same time the

Slave will move forward or reverse by a distance “dSlave”, under consideration of the impulse

scaling factors Factor1 and Factor2. In general Factor1 is the parameter to change the speed
ratio, and Factor2 is considered as a machine constant.

With most of the applications it is desirable to have proportional characteristics of Factor1, i.e.
we like to increase the Slave speed when we increase Factor1.

Some application however may require reciprocal characteristics (e.g. when we use the unit for
a rotary cutter application where Factor1 is used to set the cutting length. In this case, higher
setting requires lower Slave speed, i.e. Factor1 has to operate reciprocally.

Both, proportional and reciprocal characteristics can be selected by parameter. Depending on
these settings, the distances (and also the speeds) follow to one of the formulae below:

Proportional Operation:

Reciprocal Operation:

By340_04b_oi_e.doc / Apr-16 Page 13 / 42

5.2. Mechanical Phase and Position Considerations

Normally the synchronizer would always keep the angular phase or relative position between
Master and Slave, which has existed while the unit has been powered up, or which has been
defined manually while the unit was kept in the Reset state.

However it may be desirable to adjust the relative position in standstill or on the fly, by means
of manual or remote commands, or even to set a certain position automatically, triggered by
external events. For this reason, phase trimming functions and index functions have been
designed, which can be assigned to either the front keys or the control inputs. Once the desired
phase adjust commands have been assigned, the final function can be specified by setting of
the appropriate Operating Mode of the unit (see chapter 6)

5.2.1. Phase Trimming under Timer Control (Modes 1 – 4 and 7 – 8)

Activating one of the +/-Trim commands allows to temporary run the Slave at a speed which is
slightly higher (Trim+) or slightly lower (Trim-) than the correct synchronous speed, which
results in a displacement of phase between Master and Slave (Slave leads or lags the Master).
The differential speed to displace the phase is parameter adjustable. The system returns to
closed-loop synchronous operation in a new relative position, as soon as the Trim command is
released again.

5.2.2. Phase Trimming under Impulse Stepper Control (Modes 5 and 6)

With this mode of operation the +/-Trim commands must be assigned to two of the Control
Inputs, which then operate as impulse inputs from a remote source (push button or PLC or else).
Every impulse applied to the Trim+ input will advance the Slave by one differential increment*)
and every impulse applied to the Trim- input will retard the Slave with respect to the Master.
This method allows adjusting the relative position step by step

5.2.3. Lead or Lag by a programmable distance (Mode 3)

With this mode, every impulse detected on the Index Master or Index Slave input will jump the
Slave forward or reverse by a fixed distance, as set to the Offset register. This method of phase
displacement allows toggling the relative phase between two or more scheduled operating
positions (e.g. 0°, 90°, 180° and back to 0°).

5.2.4. Position Definition by Index Inputs (Modes 2, 6 and 8)

Index signals may be used do define and to automatically adjust mechanical positions or events
between the drives (for an example see the figure under section 3). Index signals can be
generated by proximity switches, photo cells or by use of the marker pulse of a HTL encoder.
Where you intend to use marker pulses from TTL encoders, you have to translate the Z and /Z
information to HTL level before applying it to the controller.

While modes 2 and 6 are designed for immediate and tough correction of index errors, mode 8
provides a soft way of making corrections. The Trim register is used to approach a new position
by means of an adjustable differential speed.

*) Mechanically, one differential increment equals to one Slave encoder increment divided by Factor2

By340_04b_oi_e.doc / Apr-16 Page 14 / 42

 Please observe the minimum duration of 50 µs. for index pulses
 Every index pulse must clearly mark one explicit and repeatable event

within one machine cycle

6. Operating Modes

The operating mode (parameter F02.004) sets the functions of Trim and Index inputs, provided
that these functions have been assigned to some Control Inputs or front keys.

Mode

F02.004

Trim Input Function

Index Input Function

Impulse scaling

(Slave : Master)

1

+/- Phase trim by internal
timer. Temporary change of
Slave speed while one of
the Trim commands is on.

No Function

Fact 1 : Fact 2

2

Similar to Mode 1

Index control with adjustable phase

Fact 1 : 1.00000

Adjustable Phase Offset

Index Master

Index Slave

3

Similar to Mode 1

Index Master: Slave jumps forward
Index Slave: Slave jumps reverse

Fact 1 : Fact 2

Slave position before index signal

Slave position after index signal

Jump (Offset)

4

Similar to Mode 1

Motor Potentiometer Function:
Index Master: Increment Factor1 (+++)
Index Slave: Decrement Factor1 (---)

Fact 1 : Fact 2

5

Phase trim by external pulse
source

No Function

Fact 1 : Fact 2

6

Phase trim by external pulse
source

Similar to Mode 2

Fact 1 : 1.00000

7

Similar to Mode 1

Similar to Mode 1

Fact 1 : Fact 2

8

Similar to Mode 1

Unlocked index operation with soft
correction, for use with special
applications like gantry cranes or
precision register control.

Fact 1 : 1.00000

By340_04b_oi_e.doc / Apr-16 Page 15 / 42

7. Keypad Operation

An overview of all parameters and explanations can be found under section 8.

The menu of the unit uses four keys, hereinafter named as follows:







PROG

UP

DOWN

ENTER

Key functions depend on the actual operating state of the unit. Essentially we have to describe
three basic states:

 Normal operation
 General setup procedure
 Direct fast access to scaling factors

7.1. Normal Operation

In this mode the unit operates as a synchronous controller according to the settings defined
upon setup. All front keys may have customer-defined functions according to the specifications
met in the keypad definition menu F06 (e.g. Reset or Trim or else)

7.2. General Setup Procedure

The unit changes over from normal operation to setup level when keeping the key down
for at least 2 seconds. Thereafter you can select one of the parameter groups F01 to F09.

Inside the group you can now select the desired parameter and set the value according to need.
After this you can either set more parameters or return to the normal operation.

See example on the next page…

By340_04b_oi_e.doc / Apr-16 Page 16 / 42

The adjoining sequence of key operations explains how to change
Parameter number 052 of group F06 from the original value of 0 to a new value of 8:

Step

State

Key action

Display

Comment

00

Normal operation

Actual Error

01

> 2 sec.

F01

Display of the
Parameter group

02

Level:
Parameter group



5 x F02 … F06

Select group # F06

03



F06.050

Confirmation of F06.
The first parameter of this
group is F06.050

04

Level:
Parameter numbers



2 x

F06.051…
F06.052

Select parameter 052

05



0

Parameter 052 appears in
display, actual setting is 0

06

Level:
Parameter values



8 x 1 …. 8

Setting has been modified
from 0 to 8

07

F06.052

Save the new setting (8)

08

Level:
Parameter numbers

F06

Return to level parameter
groups

09

Level:
Parameter groups

Actual Error

Return to normal operation

10

Normal operation

During the general setup procedure all control activities remain disabled.
New parameter settings become active after return to normal operation only.

7.3. Direct Fast Access to Speed Ratio Setting

To get to the fast access routine, please press both

and



at the same time

This will access the parameter group F01 right away. To change the settings follow the same
procedure as already described above. Besides the advantage of direct access, the fundamental
difference to general setup is the following:

During the fast access procedure all control functions remain fully active.
Access is limited to Factor settings; no other parameters can be changed.

By340_04b_oi_e.doc / Apr-16 Page 17 / 42

7.4. Change of Parameter Values on the Numeric Level

The numeric range of the parameters is up to 6 digits. Some of the parameters may also include
a sign. For fast and easy setting or these values the menu uses an algorithm as shown
subsequently. During this operation the front keys have the following functions:







PROG

UP

DOWN

ENTER

Saves the actual
value shown in the
display and returns

to the parameter

selection level

Increments the

highlighted

(blinking) digit

Decrements the

highlighted

(blinking) digit

Shifts the cursor

(blinking digit) one

position to the left,

or from utmost

left to right

With signed parameters the left digit scrolls from 0 to 9 and then shows “–„ (negative) and
“-1“ (minus one). The example below shows how to change a parameter from the actual setting
of 1024 to the new setting of 250 000.

This example assumes that you have already selected the parameter group and the parameter
number, and that you actually read the parameter value in the display.
Highlighted digits appear on colored background.

Step

Display

Key action

Comment

00

001024

Display of actual parameter setting, last
digit is highlighted

01



4 x

Scroll last digit down to 0

02

001020



Shift cursor to left

03

001020



2 x

Scroll highlighted digit down to 0

04

001000



2 x

Shift curser 2 positions left

05

001000



Scroll highlighted digit down to 0

06

000000



Shift cursor left

07

000000



5 x

Scroll highlighted digit up to 5

08

050000



Shift cursor left

09

050000



2 x

Scroll highlighted digit up to 2

10

250000

Save new setting and return to the
parameter number level

By340_04b_oi_e.doc / Apr-16 Page 18 / 42

7.5. Code Protection against Unauthorized Keypad Access

Parameter group F09 allows to define an own locking code for each of the parameter menus.
This permits to limit access to certain parameter groups to specific persons only.

When accessing a protected parameter group, the display will first show “CODE” and wait for

your entry. To continue keypad operations you must now enter the code which you have stored
before, otherwise the unit will return to normal operation again.

After entering your code, press the ENTER key and keep it down until the unit responds.

When your code was correct, the response will be “YES” and the menu will work normally.

With incorrect code the response will be “NO” and the menu remains locked.

7.6. Return from the Programming Levels and Time-Out Function

At any time the PROG key sets the menu one level up and finally returns to normal operation.
The same step occurs automatically via the time-out function, when during a period of 10
seconds no key has been touched.

Termination of the menu by automatic time-out will not store new settings, unless they have
already been stored by the PROG key after editing.

7.7. Reset all Parameters to Factory Default Values

Upon special need it may be desirable to set all parameters back to their original factory
settings (e.g. because you have forgotten your access code, or by too many change of settings
you have achieved a complex parameter state). Default values are indicated in the parameter
tables shown later.

To reset the unit to default, please take the following steps:



Switch power off



Press



and



simultaneously



Switch power on while you keep down both keys

Where you decide to take this action, please note that all parameters and
settings will be lost, and that you will need to run a new setup procedure again.

By340_04b_oi_e.doc / Apr-16 Page 19 / 42

8. Menu Structure and Description of Parameters

All parameters are arranged in a reasonable order of functional groups (F01 to F09)
You must only set those parameters which are really relevant for your specific application.
Unused parameters can remain as they actually are.

8.1. Summary of the Menu

This section shows a summary of the parameter groups, with an assignment to the functional
parts of the unit.

Gruppe

Funktion

Gruppe

Funktion

F01

Impulse Scaling

F03

Definitions for the Master Encoder
000

Factor 1 (Master)

026

Encoder Properties

001

Factor 2 (Slave)

027

Edge Counting

002

Reserve

028

Counting Direction

003

Reserve

029

Speed Display Factor

F02

Operational Settings
030

Speed Display Divider

031

Speed Display Dec.Point

004

Mode (Betriebsart)

F04

Definitions for the Slave Encoder
005

Trim Time

006

Integration Time

032

Encoder Properties

007

Correction Divider

033

Edge Counting

008

Factor 1 Scaling

034

Counting Direction

009

Factor 1 Minimum

035

Reserve

010

Factor 1 Maximum

036

Reserve

011

Sampling Time

037

Reserve

012

Wait Time

F05

Analog Output Settings
013

Max. Master Frequency

014

Ramp Time

038

Analog Format

015

Stop-Ramp Time

039

Offset Correction

016

Alert 1

040

Gain Correction

017

Alert 2

041

Max. Correction

018

Phase Offset*

042

Offset Total

019

Slave Pulses Index*

043

Gain Total

020

Phase Adjust*

044

Reserve

021

Master Index Divider

045

Reserve

022

Index Window

023

Max. Index Correction

024

Reserve

025

Reserve

*) Parameters for Index Modes are only available with Software version BY34002 and higher

By340_04b_oi_e.doc / Apr-16 Page 20 / 42

F06

Command Assignment

F09

Keypad Protection Codes
046

Key Up Function

072

Protect Group F01

047

Key Down Function

073

Protect Group F02

048

Key Enter Function

074

Protect Group F03

049

Input 1 Configuration

075

Protect Group F04

050

Input 1 Function

076

Protect Group F05

051

Input 2 Configuration

077

Protect Group F06

052

Input 2 Function

078

Protect Group F07

053

Input 3 Configuration

079

Protect Group F08

054

Input 3 Function

080

Protect Group F09

055

Input 4 Configuration

081

Reserve

056

Input 4 Function

082

Reserve

057

Reserve

083

Reserve

F07

Serial Communication
084

Reserve

085

Reserve

058

Unit Number

086

Reserve

059

Serial Baud Rate

087

Reserve

060

Serial Format

061

Reserve

062

Reserve

063

Reserve

F08

Special Functions
064

Input Filter

065

Trigger Threshold 1

066

Trigger Threshold 2

067

Brightness

068

Frequency Control

069

Factor Store Configuration

070

Display Time

071

Reserve

By340_04b_oi_e.doc / Apr-16 Page 21 / 42

The following schematics shows how in principle the parameter blocks are assigned to the
various elements and functions of the controller.

Master

Slave

Cont1
Cont2
Cont3
Cont4

Digital

Control

Inputs

RS232

K1 out
K2 out
K3 out
K4 out

Alert
Outputs

+/-10V

20 mA

Analogue
Outputs

P ENT

F10

F04

F06 F09

F06

F06

F05

F07

up

dn

F08

F01

F03 F01

8.2. Description of the Parameters

8.2.1. Impulse Scaling

F01 Range

Default

F01.000

Factor 1: Impulse scaling factor for Master encoder.

0.00001 ... 9.99999

1.00000

F01.001

Factor 2: Impulse scaling factor for Slave encoder.

0.00001 ... 9.99999

1.00000

8.2.2. Operational Settings

F02 Range

Default

F02.004

Operation mode (see table under section 6)

1 … 8

1

F02.005

Trim Time:
Rate of change, to be entered as a number of
cycles (1 cycle = 250 µs), for phase trimming, when
the +/- Trim command are activated

0 … 9999
0000 = Trim off
0001 = fast change
9999 = slow change

10

F02.006

Integration Time:
Time constant for the phase integrator, which
avoids positional errors, also to be entered as a
number of cycles (1 cycle = 250 µs)

0 … 9999
0000 = Integrator off
0001 = fast speed
9999 = slow speed

0

By340_04b_oi_e.doc / Apr-16 Page 22 / 42

F02 Range

Default

F02.007

Correction Divider:
Function to provide a digital attenuation of the
phase correction signal that is produced, when the
drive on mechanical grounds (dead band or
backlash) cannot respond. In such a case, it is not
desirable to make corrections immediately. The
"Correction Divider" provides a window for the
drive "backlash", within which the controller
produces no correction and a division of the
differential error count.
0 = No window, Reaction to 1 increment, no
division
1 = Window +/- 1 increments, error division by 2
2 = Window +/- 2 increments, error division by 4
3 = Window +/- 4 increments, error division by 8

etc.

0 … 9

0

F02.008

Factor 1 Scaling:
This factor allows scaling of the remote Factor 1
entry to "user units" or to adapt the numeric value
of Factor 1 to the application.

0.00001 ... 9.99999

1.00000

It is essential, for all steps of set-up, to program F1-Scaling Factor to 1.00000 first in order to
avoid confusions with factor calculations. This ensures that the Factor setting corresponds to the
real operative Factor 1.
Once the set-up procedure is terminated, set F1-Scaling Factor to the numeric value that later
should correspond to an operative value of 1.0000 for Factor 1.

Example: If the operator desires to set 3.50000 instead of 1.00000, set F1-Scaling Factor to

3.50000. For all factor calculations, please be aware if you operate with a proportional or a
reciprocal characteristic of Factor1!

F02.009
F02.010

Factor 1 Minimum:
Factor 1 Maximum:
These are limitations of the setting range of Factor
1 and out of range settings will be overwritten by
the appropriate min or max value.
With Factor 1 Minimum set to 0.95000 and Factor 1
Maximum set to 1.05000, the operator is limited to
a +/- 5% variation of the speed ratio.

0.00001 ... 9.99999

0.00001

9.99999

By340_04b_oi_e.doc / Apr-16 Page 23 / 42

F02 Range

Default

F02.011

Sampling Time:
Sets the internal digital feed forward control with
respect to dynamics and resolution.
Lower set values result in faster response, but less
accuracy of the feed forward signal. Higher set values
result in better accuracy, but slower response with
sudden speed changes.

Feed forward signals with lower accuracy do not at all affect
speed accuracy of the synchronizing process, but only might
cause slight angular errors. Depending of the maximum Master
encoder frequency, the subsequent setting can be
recommended:

0.001 … 9.980
(seconds)

0.001

fmax

Sampling -Time

1 kHz

100 ms

3 kHz

33 ms

10 kHz

10 ms

30 kHz

3 ms

≥ 100 kHz

1 ms

F02.012

Wait Time:
Not used, please leave at default setting.

0.01…9.99

9.99

F02.013

Max. Master Frequency:
Sets the expected maximum input frequency on the
Master encoder input. You should add a 10% reserve to
the real maximum frequency. The unit will not process
frequencies higher than this setting

0.1 …300000.0

(Hz)

30000.0

F02.014

Ramp Time:
Ramp time for changes of the Slave speed after Factor1
has been changed.

0 … 999

(sec.)

0

F02.015

Stop-Ramp Time:
Deceleration and acceleration ramp when the “Stop

Slave” command is used.

0 … 999

(sec.)

0

Ramp time settings refer to one full transition of the analog output from 0 volts to 10 volts.

F02.016
F02.017

Alert 1:
Alert 2:
Set tolerance window for errors between Master and
Slave. Affects outputs 1 or 2 when out of window.

5 … 9999

(Increments)

256

The alarm count considers the error bits after the correction divider (see register “Correction
Divider”). With Index modes the Alert 2 output is overwritten by the “Index ok” function.

By340_04b_oi_e.doc / Apr-16 Page 24 / 42

F02 Range

Default

F02.018

Phase Offset *
Allows setting a position offset between the Master
index and the Slave Index. When set to zero, the
controller will align the active edges of both index
signals. Setting is in Slave encoder increments.

-199999 - 199999

0

Adjustable Phase Offset

Index Master

Index Slave

Slave Pulses Index

F02.019

Slave Pulses Index *
Number of Slave encoder pulses between two slave
index signals

1 – 999999

5000

F02.020

Phase Adjust *
With index operation only (Mode 2 and 6):

1 - 9

1

Digital attenuation of the response upon marker pulse errors.
1: full correction with each index check, i.e. 100%

2: correction by several steps with 50 % of the residual error
3: correction by several steps with 25 % of the residual error
4: correction by several steps with 12,5 % of the residual error
5: correction by several steps with 6,25 % of the residual error etc.

The setting depends on the dynamics of the drive and the maximum speed.
Example: If a marker pulse arrives every 20 ms but the drive cannot correct the
largest error in 20ms, it will lead to instability if the next correction is executed
before the previous is completed. In such a case the phase correction percentage
must be reduced.

F02.021

Master Index Divider *
This is a programmable index divider for the master
marker pulses. It permits different numbers of marker
pulses from the master and the slave.

For the same reason as clarified above, we also recommend
to use the divider with very short sequences of marker
pulses, to allow the drive to stabilize before the next index
correction starts.

1 - 99

1

*) Parameters for Index Modes are only available with Software version BY34002 and higher

By340_04b_oi_e.doc / Apr-16 Page 25 / 42

F02 Range

Default

F02.022

Index Window *
Sets a window (encoder increments) where the slave
index pulse should be within with regard to the actual
master index position. The output is ON when the
Slave index is inside the tolerance window

1 - 9999

10

F02.023

Max. Index Correction *
The response to registered marker pulse errors is
limited to the value set here (encoder increments).

Works similar to parameter “Phase Adjust” but allows

absolute limitation of the amount of index correction
to a level that can be handled by the drive.

1 - 32000

32000

*) Parameters for Index Modes are only available with Software version BY34002 and higher

Important Hints for Index Operation only:

 When using the +/-Trim function with one of the index modes, the Trim impulses

will automatically take along the Phase Offset setting, i.e. the Trim function can
also be used to manually adjust the desired Phase Offset.

 Phase Offset settings adjusted with use of the +/-Trim function will be active until

to next power-down only, unless you apply a “Store EEProm” command before
switching power off

 With operating modes 2 and 6 it is most important to set the correct number of

encoder pulses between two Slave index pulses to parameter F02.019.
Bad settings may cause severe instability!

 With mode 8, when the accurate encoder impulse number between two Slave

index pulses is unknown or can vary, it is also acceptable to set parameter
F02.019 to an estimated number of impulses. However, the setting must be lower
or equal but not higher than the real number of encoder pulses between two index
pulses. Index errors higher than half of the F02.019 register setting will not be
corrected with mode 8

 As soon as one of the index modes is used, output K2 will operate as “Index ok”

output and the setting of Alert 2 is inactive

By340_04b_oi_e.doc / Apr-16 Page 26 / 42

8.2.3. Definitions for the Master Encoder

F03 Range

Default

F03.026

Encoder properties

0 … 3

1

0=

Differential Impulses A, /A, B, /B (2 x 90°) incl. inv.

1=

Single-ended Impulses A, B (2 x 90°) without inv.

F03.027

Edge counting

0 … 2

0

0=

Simple edge evaluation (x1)

1=

Double edge evaluation (x2)

2=

Full quadrature edge evaluation (x4)

F03.028

Counting direction

0 … 1

0

0=

Up when A leads B

1=

Down when A leads B

F03.029

Speed Display Factor
Multiplication factor to calculate the speed display value
from the master frequency (see chapter 9.3)

1 … 999999

1

F03.030

Speed Display Divider
Divider to calculate the speed display value from the master
frequency (see chapter 9.3)

1 … 999999

1

F03.031

Speed Display Dec.Point
Position of decimal point for the speed display value (see
chapter 9.3)

0 … 5

0

8.2.4. Definitions for the Slave Encoder

F04 Range

Default

F04.032

Encoder properties

0 … 3

1

0=

Impulses A, /A, B, /B (2 x 90°) incl. inv.

1=

Impulses A, B (2 x 90°) without inv.

F04.033

Edge counting

0 … 2

0

0=

Simple (x1)

1=

Double (x2)

2=

Full quadrature (x4)

F04.034

Counting direction

0 … 1

0

0=

Up when A leads B

1=

Down when A leads B

F04.035

n. a.

n. a. = not applicable

By340_04b_oi_e.doc / Apr-16 Page 27 / 42

8.2.5. Analog output definitions

F05 Range

Default

F05.038

Control characteristics and analog format

0 … 3

0

0=

The slave speed changes proportionally to the
Factor 1 setting, i.e. doubles motor speed when
changing Factor 1 from 1.00000 to 2.00000.
(suitable for most of all applications)
Output scaled for a -10 volts … +10 volts signal

1=

The slave speed is reciprocal to the Factor 1
setting, i.e. halves the motor speed when
changing Factor 1 from 1.00000 to 2.00000.
(suitable for rotating cutter applications when
Factor 1 represents the length preset)
Output scaled for a -10 volts … +10 volts signal

2=

Similar to setting 0, but
Output scaled for a -20 mA … +20 mA signal

3=

Similar to setting 1, but
Output scaled for a -20 mA … +20 mA signal

F05.039

Offset Correction:
Digital setting of analog offset on correction signal.

-10.000 … +10.000
(volts)

0.000

F05.040

Gain Correction:
Digital setting of the proportional gain of the control
loop. Setting to 2.048 results in a response of 1 mV
per error bit. Recommended setting: 0.500...5.000
(Gain Correction / 2048 = x.xxx volts per error bit).

0 … 51.200

2.000

F05.041

Max. Correction:
Limitation of the output voltage of the correction
signal (correction will not exceed this setting)

0 … 10.000

(volts)

2.000

F05.042

Offset Total:
Digital setting of analog offset of the overall analog
output signal.

-10.000 … +10.000
(volts)

0.000

F05.043

Gain Total:
Sets the full-scale output voltage at maximum master
frequency.

0 … 99.999

10.000

n. a. = not applicable

Calculation of analog output voltage:

  

  

ectionOffsetCorr

tionGainCorreccounteralDifferenti

lOffsetTota

uencyMasterFreqMax

frequencymaster

FactorGainTotalVU

A







2048.

1][

Feed forward signal correction signal

By340_04b_oi_e.doc / Apr-16 Page 28 / 42

8.2.6. Key command assignments

F06 Range

Default

F06.046

Function assignment to key „UP“

0 … 16

0

0=

No function

1=

Reset

2=

Trim -

3=

Trim +

4=

n. a.

For more details about these

functions see section 9.1

5=

n. a.

6=

Integrator off

7=

Store EEProm

8=

Scroll Display

9=

n. a.

10=

Clear Min. & Max.

11=

n. a.

12=

n. a.

13=

n. a.

14=

Read front thumbwheels (model BY641 only)

15=

Stop Slave

16=

n. a.

F06.047

Function assignment to key „DOWN“

0 … 16

0

See key „UP“

F06.048

Function assignment to key „ENTER“

0 … 16

0

See key „UP“

n. a. = not applicable

By340_04b_oi_e.doc / Apr-16 Page 29 / 42

8.2.7. Characteristics and functions of the Control Inputs

F06 Range

Default

F06.049

Switching characteristics of input „Cont.1“

0 … 7

0

0=

NPN (switch to -), function active LOW

1=

NPN (switch to -), function active HIGH

2=

NPN (switch to -), rising edge

3=

NPN (switch to -), falling edge

4=

PNP (switch to +), function active LOW

5=

PNP (switch to +), function active HIGH

6=

PNP (switch to +), rising edge

7=

PNP (switch to +), falling edge

F06.050

Function assignment to input „Cont.1“

0 … 16

6

0=

No function

1=

Reset

2=

Trim -

3=

Trim +

4=

n. a.

For more details about these

functions see section 9.1

5=

n. a.

6=

Integrator off

7=

Store EEProm

8=

Scroll Display

9=

Parameter Disable

10=

Clear Min. & Max.

11=

Index Slave

12=

Index Master

13=

n. a.

14=

Read front thumbwheels (model 641 only)

15=

Stop Slave

16=

n. a.

F06.051

Switching characteristics of input „Cont.2“

See „Cont.1“ (F06.049)

F06.052

Function assignment to input „Cont.2“

See „Cont.1“ (F06.050)

F06.053

Switching characteristics of input „Cont.3“

See „Cont.1“ (F06.049)

F06.054

Function assignment to input „Cont.3“

See „Cont.1“ (F06.050)

F06.055

Switching characteristics of input „Cont.4“

0 – 3

0=

NPN (switch to -) function active LOW

no edge-triggered functions are

possible with Cont.4

1=

NPN (switch to -) function active HIGH

2=

PNP (switch to +), function active LOW

3=

PNP (switch to +), function active HIGH
F06.056

Function assignment to input „Cont.4“

See „Cont.1“ (F06.050)

n. a. = not applicable

By340_04b_oi_e.doc / Apr-16 Page 30 / 42

 Unconnected NPN inputs are always HIGH (internal pull-up resistor)

Unconnected PNP inputs are always LOW (internal pull-down resistor)

 When you use Index operation, it is mandatory to use

Control Input 1 as Master Index (F06.050 = 12) and
Control Input 2 as Slave Index (F06.052 = 11).
These two inputs are no more available for other purpose.

 Index inputs must always be edge-triggered, i.e. parameters F06.049 and F06.051

must be either 2 or 3 or 6 or 7 when you use index operation.

 Where you like visualize Index Signals on your PC screen by means of the OS32

Operator Software, you must temporary set the inputs to static operation. The
corresponding light boxes on the screen are not suitable to display dynamic
signals. Please return to edge- triggered operation after the test.

8.2.8. Serial communication parameters

F07 Range

Default

F07.058

Serial device address (unit number)

11 … 99

11

F07.059

Serial baud rate

0 … 6

0

0=

9600 Baud

1=

4800 Baud

2=

2400 Baud

3=

1200 Baud

4=

600 Baud

5=

19200 Baud

6=

38400 Baud

F07.060

Serial data format

0 … 9

0

0=

7 Data, Parity even, 1 Stop

1=

7 Data, Parity even, 2 Stop

2=

7 Data, Parity odd, 1 Stop

3=

7 Data, Parity odd, 2 Stop

4=

7 Data, no Parity, 1 Stop

5=

7 Data, no Parity, 2 Stop

6=

8 Data, Parity even, 1 Stop

7=

8 Data, Parity odd, 1 Stop

8=

8 Data, no Parity, 1 Stop

9=

8 Data, no Parity, 2 Stop

By340_04b_oi_e.doc / Apr-16 Page 31 / 42

8.2.9. Special functions

F08 Range

Default

F08.064

Digital input filter: must be set to “0”.

0 … 3

0

F08.065

Trigger threshold for encoder1 inputs *)

30 … 250

166

F08.066

Trigger threshold for encoder2 inputs *)

30 … 250

166

F08.067

Brightness of the 7-segment LED display

0 … 4

0

0=

100% of maximum brightness

1=

80% of maximum brightness

2=

60% of maximum brightness

3=

40% of maximum brightness

4=

20% of maximum brightness

F08.068

Frequency Control: must be set to “0”

0 … 1

0

F08.069

Factor Storage

0 … 1

0

0=

Factor temporary active until next power-down **)

1=

Factor stored to EEProm for enduring use **)

F08.070

Display Time: Update time (sec.) for display only

0.005 … 9.999

0.050

F08.071

Default Display: Number of actual value displayed by
the unit after power up (see table in chapter 9.1 at
description of Scroll Display command)

0 … 8

0

*) Must be set to the default value (166) for any kind of input signals, except for single-

ended TTL signals which require a setting of 35.

**) Refers only to those changes of the speed ratio settings where either the “Direct Fast

Access” menu (see chapter 7.3) or the motor potentiometer function (operation mode 4,
see chapter 6) have been used.

8.2.10. Keypad protection codes

F09 Range

Default

F09.071

Protected group F01

F09.072

Protected group F02

0

F09.073

Protected group F03

0 = no protection

F09.074

Protected group F04

F09.075

Protected group F05

1 – 999 999 =

F09.076

Protected group F06

Protection code

F09.077

Protected group F07

for the actual

F09.078

Protected group F08

parameter group

F09.079

Protected group F09

By340_04b_oi_e.doc / Apr-16 Page 32 / 42

9. Description of Commands and Outputs

9.1. Commands

No.

Command

Description

Assignment to

Keypad

Input

1

Reset

Sets the internal differential counter and the analog
correction signal to zero. Both drives run solely in
analog synchronization (open loop) whilst activated

yes

yes

2

Trim-

Provides a temporary lower or higher slave speed
which results in a phase displacement between the
motor shafts. When releasing the trim command, the
drives will synchronize again in their new relative
position. In Modes 5 and 6 impulses are required to
change the position step by step

yes

yes

3

Trim+

4

n. a.

5

n. a.

6

Integrator off

This command sets the phase integrator to 0. This
prevents the integrator from building up error when
the drives are stopped, but not in a perfect
synchronous position. This prevents any leap in speed
on restart

yes

yes

7

Store EEProm

Stores actual operational settings to the EEProm, so
they remain available also after power down.

yes

yes

8

Scroll Display

Selects the source of the digital display.
See chapter 9.3 “Display of Actual Values” for details.

yes

yes

9

Parameter
Disable

Disables the keypad for any parameter access. Only
commands assigned to the keypads will be accessible

no

yes

10

Clear
Min. & Max

Sets the internal minimum and maximum error
registers to the actual differential error.

yes

yes

11

Index Slave

Assigns the index pick-up function to the input
(respectively Factor1 inc./dec. with Mode 4)

yes

yes

12

Index Master

13

n. a.

14

Read
Thumbwheels

Reads and activates the Factor 1 setting from the front
thumbwheel switches (model BY641 only)

yes

yes

15

Stop Slave

Ramps the Slave drive down to standstill using the

“Stop Ramp”. When released, the Slave ramps up

again and locks into synchronization

yes

yes

16

n. a.

n. a. = not applicable

By340_04b_oi_e.doc / Apr-16 Page 33 / 42

9.2. Outputs

No.

Output

Terminal

K1

Alert 1
This output indicates that the position error has exceeded the
preset tolerance band as specified by parameter F02.16 “Alert 1”

X2 / 26

K2

Alert 2 / Index ok
When operating without index pulses, this output also works as
alert signal. It then indicates that the position error has exceeded
the preset tolerance band as specified by parameter F02.17
“Alert 2”.
With index operation (Parameter F02.004 „Operation Mode“ = 2,
6 or 8), K2 works as “Index ok” output. It then indicates that the
slave index is within the preset tolerance band as defined by
parameter F02.022 “Index Window”.

X2 / 25

K3

Max. Correction
Indicates that the limitation of the correction voltage has been
activated to keep the correction inside “Max. Correction”

X1 / 10

K4

Max. Frequency
Indicates that the actual master frequency is higher than the limit
set by parameter F02.013 “Max. Master Frequency”

X1 / 9

By340_04b_oi_e.doc / Apr-16 Page 34 / 42

9.3. Display of Actual Values

During normal operation it is possible to display an actual value. Two LEDs at the front panel
indicate the actual value displayed. You can scroll the actual value on the display by Scroll
Display command, which can be assigned either to a key or to an input. Parameter F08.071
“Default Display” selects the actual value to be displayed after power up of the unit.

No.

Display

L1 (red)

L2 (yellow)

0

Display OFF (only two decimal points are lit to indicate
operation state)

OFF

OFF

1

Position error (differential counter)

OFF

OFF

2

Position error (bar graph display, see diagram below)

OFF

OFF

3

Actual Master speed

The speed display can be scaled by the two parameters
F03.029 Speed Display Factor and F03.030 Speed:

030.03

029.03][

F

FHzfrequencyMaster

valueDisplay





If you want to display a decimal point with the speed
value you can select the position of the decimal point by
parameter F03.031 Speed Display Dec.Point.

ON

OFF

4

Recorded Minimum Error since last “Clear min-max”
command

OFF

ON

5

Recorded Maximum Error since last “Clear min-max”
command

ON

ON

6

Pulse count between two Master index pulses

Flashing

OFF

7

Pulse count between two Slave index pulses

OFF

Flashing

8

Index position error (

Flashing

Flashing

Slave lags Master

Slave leads Master

-4 ... 0 ... +4
+5 ... +8

+9 ... +16
+17 ... +32
+33 ... +64

> +64

Bar graph display with reference to the actual synchronization error

The diagram shows positive errors only (Slave lags Master). Negative errors are mirror-inverted.

By340_04b_oi_e.doc / Apr-16 Page 35 / 42

10. Steps for Commissioning

For easy and uncomplicated commissioning of the BY340 / 641 controllers you need a PC with
the actual operator software OS3.x. You can download this software and full instructions, free
of charge, from our homepage www.motrona.com.

Connect your PC to the synchronizer as shown in section 3.6 and start the OS3.x software. The
following screen will appear:

Where instead you find the mask blank with the indication „OFFLINE“ in the top bar, please
click to the „Comms“ menu and check the serial settings of your PC.

Edge triggered events (e.g. Index Master / Index Slave) cannot be displayed
in the OS3.x, due to the slow serial data transmission.

By340_04b_oi_e.doc / Apr-16 Page 36 / 42

Set all parameters in the Edit filed according to your needs, following the hints given in this
manual. The following parameters should initially be set to the values as shown:

Number

Register

Initial Setting

F02.004

Operation mode

1

F02.006

Integration Time

0000

F02.007

Correction Divider

0

F05.040

Correction Gain

1.000

F05.041

Max. Correction

10.000

After entry of all parameters click to “Transmit All” followed by “Store EEProm” to store all

parameters to the BY340 or BY641 controller.

At this time, both drives (Master and Slave) must be adjusted to proper and stable
operation over the full speed range. Slave drive settings must provide a maximum
of dynamics and response (set ramps to zero, switch of any integral or differential
component of the internal speed control loop, operate the drive with proportional
speed control only, with the proportional Gain set as high as possible).

10.1. Running the Adjust menu

For adjustments of directions and control gains of the slave drive, you need to open the
„Adjust“ menu available under „Tools“ in the main menu of the screen. To start the Adjust
menu the first time, the Slave drive should be disabled for reasons of safety.

By340_04b_oi_e.doc / Apr-16 Page 37 / 42

10.2. Set Directions of Rotation

The direction of rotation must be defined for both, master and slave encoder. Make sure the
Reset is switched on when you do this (the softkey must show “Reset is ON”)

 Move the Master encoder into forward direction (manually or by means of a remote speed

signal to the Master drive). Observe the “Counter Master” value shown in the monitor
window on the right. It must count up to positive values. Where you find it counts down or
to negative, please click to button “Master Direction” to change the counting direction.

 Move the Slave encoder into forward direction (manually or by enabling the Slave drive

while the Master is moving forward). Observe the “Counter Slave” value. It must again
count up to positive values. Where you find it counts down or to negative, please click to
button “Slave Direction” to change the counting direction.

10.3. Tuning the Analog Output

 Switch Reset to ON by clicking to the corresponding softkey on the screen.
 Enable both, Master and Slave drive. Turn the speed signal for the Master to approximate

25% of the maximum speed. The Slave should now move, too. As a next step, switch the
Reset to OFF by clicking to the Reset button (showing actually “Reset On”). This will
activate the closed loop control.

 Observe the color bar and the value of the differential counter. There are the following

two possibilities:

a. The bar graph moves to the right and the differential counter shows positive values. This

indicates that the analog output is too low. Please increase the setting of “Gain Total” by
scrolling up with the arrow key on the right, or by shifting the slider into a more right
position.

b. The bar graph moves to the left and the differential counter shows negative values. This

indicates that the analog output is too high. Please decrease the setting of “Gain Total”
by scrolling down with the arrow key on the left, or by shifting the slider into a more left
position.

“Gain Total” is set correctly when the bar graph remains in its center position and the
differential counter swings around zero (e.g. +/-8 counts)

 Turn speed signal for the master to approximately 80% of maximum speed. Continue to

observe the color bar and the value of the differential counter and adjust “Gain Total”
again if necessary.

You can reset the differential counter to zero at any time between, by cycling

the “Reset” command.

By340_04b_oi_e.doc / Apr-16 Page 38 / 42

10.4. Setting of the Proportional Gain

The register “Gain Correction” determines how strong the controller responds to position and
speed errors of the drive. In principle, this setting therefore should be as high as possible.
However, depending on dynamics and inertia of the whole system, too high gain values will
produce stability problems.

Please try to increase the setting of Correction Gain from 0.500 to 1.000, 1500, 2.000, 2.500,

3.000 etc. However, as soon as you find unsteady operation, noise or oscillation, you must
reduce the setting again correspondingly.

We also recommend to ramp up and down the master while checking the color bar and the
differential counter for stable operation.

Once you have successfully concluded these steps, you can exit the Adjust menu.
Your synchronous application is ready to work now.

10.5. Hints for final operation

10.5.1. Using and Adjusting the Integrator

When, for stability reasons, you needed to keep your ” Correction Gain” value low, any

important non linearity in your drive system could cause changing phase errors with different
speeds or loads (e.g. color bar deviates to right at low speed, stays in center at medium speed
and deviates to left at maximum speed).

Please note that a deviation of the color bar does not indicate a speed error at all, unless the
differential counter shows figures outside a +/- 1024 error increment range. Inside this range,
the speed is always error-free and deviations only refer to a constant number of encoder
increments that the Master leads or lags the Slave.

Where your differential counter remains in an acceptable range around zero (e.g. -8....0....+8),

there is no need to use the integrator and you should leave “Integration Time” set to 0000.

Where you feel that, despite of maximum settings of the proportional gains, your phase

accuracy must still become better, set “Integration Time” to 50....40....30 20....10 or even

lower. The Integrator will move the phase error always into a +/-6 increments error window.
The lower the Integration Time setting, the faster it will catch up with the correct phase. Too
low settings (= too high integration speeds) will however result in oscillation problems.

Too high settings of Gain-Correction and too low settings of the Integration Time
will cause stability problems like oscillation or hunting of the Slave

10.5.2. Adjusting the Correction Divider

Where you find your color bar oscillates quickly around zero over several fields, this indicates
your encoder resolution is too high with respect to mechanical clearance, backlash of tooth
belts or other tolerances. To eliminate this, set Correction Divider to 1 or 2 or higher until you
observe more stable operation.

By340_04b_oi_e.doc / Apr-16 Page 39 / 42

11. Appendix for model BY 641

11.1. Relay Outputs

While model BY340 provides high-speed transistor outputs only, model BY641 provides four
additional relay outputs, operating in parallel to the high-speed transistor outputs K1 – K4.

All electrical connections of BY641 are fully similar to BY340, except that with BY641 models
the back plane is equipped with four additional terminal strips (3 positions each).

2 31 5 64 8 97 11 1210

X3

K4-C

K4-NO

K4-NC

K3-C

K3-NO

K3-NC

K2-C

K2-NO

K2-NC

K1-C

K1-NO

K1-NC

REL.4 REL.3 REL.2 REL.1

C =
NO =

Common contact

NC =

Normally open
Normally closed

Relay connector with units after Jan, 2009

2 31 2 31 2 31 2 31

K4-C

K4-NO

K4-NC

K3-C

K3-NO

K3-NC

K2-C

K2-NO

K2-NC

K1-C

K1-NO

K1-NC

X6 X5 X4 X3

Relay connector with units before Jan, 2009

(replaced because of mistakable screw terminals)

11.2. Front Thumbwheel Switches

Moreover, the BY641 models provide thumbwheel switches on the front panel, for simple and
easy setting of the speed ratio by means of Factor1.

This is how the front switches work:

 Upon power-up the unit will read the thumbwheel settings and overwrite the internal

Factor 1 setting correspondingly, i.e. the synchronization will use the front
thumbwheels.

 When during operation you change the thumbwheel setting, this will not affect the

synchronization until you apply a “Read Thumbwheel” command to the unit. You can

assign this command to either one of the front keys or to one of the Control Inputs, as
shown under sections 8.2.6 and 8.2.7

 When the front thumbwheels are all set to zero, the controller will automatically use the

internal Factor 1 as entered by menu.

By340_04b_oi_e.doc / Apr-16 Page 40 / 42

12. Technical Specifications & Dimensions

Power supply:

Input voltage (AC):
Input voltage (DC):
Protection circuit::
Consumption:
Connections:

24 VAC +/- 10 %
17 … 40 VDC
reverse polarity protection
100 mA at 24 VDC (unloaded)
screw terminal, 1.5 mm² / AWG 16

Encoder supply:

Number of aux. voltages:
Output voltage 1:
Output current 1:
Output voltage 2:
Output current 2:
Connections:

2 (each double-performed)
24 VDC
max. 120 mA each

5.2 VDC

max. 150 mA each
screw terminal, 1.5 mm² / AWG 16

Incremental input:

Signal levels:

Channels:
Frequency:

Internal resistance:
Connections:

HTL: LOW 0 … 2 V, HIGH 10 … 30 V
TTL: LOW 0 …0.8 V, HIGH 3 … 5 V

RS422: Differential voltage > 1 V
symmetrical: A, /A, B, /B or asymmetrical: A, B
RS422 / TTL symmetrical: 300 kHz
HTL or TTL asymmetrical: 200 kHz
Ri ≈ 8.5 kOhm
screw terminal, 1.5 mm² / AWG 16

Control inputs:

Number of inputs:
Signal levels:
Characteristic:
Internal resistance:
Min. pulse time:
Connections:

4 (configurable)
HTL: LOW 0 … 2.5 V, HIGH 10 … 30 V
NPN / PNP / Namur
Ri ≈ 3.3 kOhm
50 µs
screw terminal, 1.5 mm² / AWG 16

Control outputs:

Number of outputs:
Protection circuit:
Characteristic:
Output current:
Reaction time:
Connections:

4 fast transistor outputs *
short circuit proof
PNP, 5 … 30 V
350 mA each
< 1 ms **
screw terminal, 1.5 mm² / AWG 16

Relay outputs:
(only with Version BY641)

Number of outputs:
Switching capacity:
Reaction time:
Connections:

4 potential-free changeovers *
250 VAC / 1 A / 250 VA or 100 VDC / 1 A / 100 W
approx. 10 ms
screw terminal, 1.5 mm² / AWG 16

Analog output:

Voltage output:
Current output:
Resolution:
Accuracy
Reaction time:
Connections:

+/- 10 V, max. 2 mA
0 / 4 … 20 mA (burden: max. 270 Ohm)
14 bit (± 13 bit)

0.1 %

< 1 ms **
screw terminal, 1.5 mm² / AWG 16

Serial interface:

Format:
Baud rate (selectable):
Connections:

RS232
600, 1200, 2400, 4800, 9600, 19200, 38400 Baud
screw terminal, 1.5 mm² / AWG 16

*) Diode or RC filtering is mandatory when switching inductive loads
**) Continuous serial communication may temporary increase response times

By340_04b_oi_e.doc / Apr-16 Page 41 / 42

Continuation „Technical Specifications“

Housing:

Type / Material:
Mounting:
Dimensions BY340:

Dimensions BY641:

Protection class BY340:
Protection class BY641:
Accessories:
Weight:

Norly UL94-V-0 / plastic
panel
cut out (w x h):
91 x 44 mm / 3.59 x 1.73 inch
outer dimensions (w x h x d):
110 x 48 x 141 mm / 4.33 x 1.89 x 5.55 inch
cut out (w x h):
89 x 91 mm / 3.50 x 3.59 inch
outer dimensions (w x h x d):
110 x 96 x 141 mm / 4.33 x 3.78 x 5.55 inch
front: IP 65 / rear: IP20
front: IP 20 *** / rear: IP20
SM300: mounting bracket for top hat rail mounting of BY340
BY340: approx. 250 g / BY641: approx. 370 g

Ambient temperature:

Operation:
Storage:

0 °C … +45 °C / +32 … +113 °F (not condensing)

-25 °C … +70 °C / -13 … +158 °F (not condensing)

Conformity & standards:

EMC 2004/108/EC:
LV 2006/95/EC:
Guideline 2011/65/EU:

EN 61000-6-2, EN 61000-6-3, EN 61000-6-4
EN 61010-1
RoHS-conform

***) IP65 is also achievable when using our optional plexiglass cover part # 64026

12.1. Dimensions of model BY340:

96,0 (3.780’’)

110,0 (4.331’’)

4

4

,

0

(

1

.

7

3

2

)

1

0

,

0

(

.

3

9

4

)

8

,

0

(

.

3

1

5

)

91,0 (3.583)

9,0 (.345)

129,0 (5.079)
140,5 (5.531)

48,0 (1.890)

Panel cut out: w x h = 3.583 x 1.732’’ (91 x 44 mm)

By340_04b_oi_e.doc / Apr-16 Page 42 / 42

12.2. Dimensions of model BY641:

96,0 (3.780’’)

110,0 (4.331’’)

90,5 (3.563)

10,0

(.394)

8,0 (.315)

88,5 (3.484)

9,0 (.345)

129,0 (5.079)

140,5 (5.531)

9

6

,

0

(

3

.

7

8

)

18,5 (.728)

1

1

1

,

5

(

4

.

3

9

)

With optional plexi glass cover
for protection class IP65
(motrona part # 64026)

1

2

,

0

(

.

4

7

2

)

Panel cut out: w x h = 3.504 x 3.583’’ (89 x 91 mm)