Motrona 7788.5150, 7788.5155 User guide

Operating Manual

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

touchMATRIX® Indicator 7788.5150 / 7788.5155

Frequency counter, tachometer and speed indicator with touchscreen and graphic display

Product features:

• Multifunction unit with operating modes for incremental encoders (tachometer, pulse counter, position

indicator)

- Operating modes as frequency display and / or position display (pulse counter)

- Universal incremental inputs (HTL / TTL / RS422) for NPN / PNP / NAMUR encoders and sensors

- Functions such as links (eg A+B, A-B, ...), scaling, filters, start-up delay, ...

• Bright and high-contrast display with event controlled color variations

• Emulation of a 7-segment display inclusively icons and units

• Intuitive and easy parameterization by plain text and touchscreen

• 5 / 24 V auxiliary output for encoder supply

• Input frequencies up to 1 MHz

• Linearization with 24 interpolation points

• 96 x 48 mm (3.78 x 1.89 inch) norm panel housing and IP65 protection

Available options:

7788.5150: Basic unit with HTL inputs (A, B), 3 control inputs

7788.5155: Basic unit with HTL/RS422 inputs (A, /A, B, /B), 3 control inputs

• Option AC: Power supply 115 … 230 VAC

• Option AO: 16 bit analog output, 4 control outputs, serial RS232 interface

• Option AR: 16 bit analog output, 4 control outputs, serial RS485 interface

• Option CO: 4 control outputs, serial RS232 interface

• Option CR: 4 control outputs, serial RS485 interface

• Option RL: 2 relay outputs

Options can be combined

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Version:

Description

7788.5150_01a_oi/mbo/Jan-21

First Version

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.

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Table of Contents

Safety Instructions and Responsibility .......................................................................... 5

General Safety Instructions ............................................................................................................. 5

Use according to the intended purpose .......................................................................................... 5

Installation ....................................................................................................................................... 6

Cleaning, Maintenance and Service Notes..................................................................................... 6

Introduction .................................................................................................................. 7

Operation mode ............................................................................................................................... 7

Function diagram ............................................................................................................................. 8

Electrical Connections .................................................................................................. 9

DC Power Supply ............................................................................................................................. 9

Auxiliary Voltage Output.................................................................................................................. 9

7788.5150: Incremental Input A, B ................................................................................................ 10

7788.5155: Incremental Input A, /A, B, /B .................................................................................... 11

Control Inputs ................................................................................................................................. 12

Analog Output (Option AO/AR) ...................................................................................................... 12

Serial interface (Option AO/AR/CO/CR) ........................................................................................ 13

Control-Output (AO/AR/CO/CR) ..................................................................................................... 13

AC Power supply (Option AC) ........................................................................................................ 14

Relay-Output (Option RL) ............................................................................................................... 14

Display and touch screen ........................................................................................... 15

Screen structure for parametrization ............................................................................................ 15

Screen structure in operation ........................................................................................................ 16

Error messages .............................................................................................................................. 18

Parameter / Overview-Menu Structure ....................................................................... 19

General Menu ................................................................................................................................ 21

Speed A Settings ........................................................................................................................... 23

Speed B Settings ........................................................................................................................... 26

Counter A Settings ......................................................................................................................... 29

Counter B Settings ......................................................................................................................... 33

Collection Settings ......................................................................................................................... 36

Scaling Settings ............................................................................................................................. 37

Preselection Values ....................................................................................................................... 38

Preselection 1 Menu ...................................................................................................................... 39

Preselection 2 Menu ...................................................................................................................... 43

Preselection 3 Menu ...................................................................................................................... 44

Preselection 4 Menu ...................................................................................................................... 45

Serial Menu ................................................................................................................................... 46

Analog Menu ................................................................................................................................. 48

Command Menu ............................................................................................................................. 50

Display Menu ................................................................................................................................. 53

Linearization Menu ........................................................................................................................ 57

Appendix .................................................................................................................... 58

Data readout via serial interface ................................................................................................... 58

Modbus RTU Interface ................................................................................................................... 59

Parameter setting ....................................................................................................................................... 59

Modbus Communication ............................................................................................................................. 60

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Diagnostics ................................................................................................................................................. 62

Parameter / serial codes................................................................................................................ 62

Linearization ................................................................................................................................... 68

Dimensions .................................................................................................................................... 70

Technical specifications ................................................................................................................ 71

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Safety Instructions and Responsibility

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 reserves 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.

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 have 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). The device is not suitable for operation in explosion-proof
areas or areas which are excluded by the EN 61010-1 standard.

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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 voltage-sources.

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 temperature-ranges.
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 cross-sections for wiring are
described in the Technical Specifications.

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

https://www.motrona.com/en/support --> “[General EMC Rules for Wiring, Screening and Earthing]”.

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.

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Introduction

This series of display unit is suitable for HTL impulse signals and panel mounting. It is very versatile in
use, due to the intuitive handling and the extensive range of functions and options.

Operation mode

All functions are can be configured in the parameter menu.
The device can be set to one of the following operation modes:

• Operation as frequency display for incremental input signals

- Measurement of frequency / RMP indicator

- Tachometers / speed indicator

- Monitoring functions for speed and standstill

- Possibility of linking (A+B, B/A, ...) of both channels

(e.g., ratio or percentage deviation)

• Operation as position indicator / counter for incremental input signals

- Pulse counter

- Up- or down counter

- Position indicator

- Protractor

- Quadrature counter

- Batch counter / total counter

- Possibility of linking (A+B, B/A, ...) of both channels

(e.g., ratio or percentage deviation)

• Operation as speed- and position indicator for incremental input signals

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Function diagram

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Electrical Connections

The terminal screws should be tightened with a slotted screwdriver (blade width 2mm).

7788.5150 7788.5155

DC Power Supply

The unit accepts DC supply from 18 to 30 V at the terminals 1 and 2. The power consumption depends on
the level of the supply voltage with aprox. 100 mA and the additional current required at the Auxiliary
Voltage Output.

All GND terminals are internally interconnected.

Auxiliary Voltage Output

Terminal 3 and 4 provide an auxiliary output for supply of sensors and encoders.
The output voltage depends on the power supply.

DC version

AC version

The encoder voltage is approx. 1 V lower than

the power supply voltage at terminal 1 and 2

and should be loaded with max. 250 mA.

The encoder voltage is 24 VDC (± 15%) and

should be loaded with max. 150 mA up to 45

degrees Celsius. At higher temperature the

maximum output current is reduced to 80 mA.

At 7788.5155 devices, the auxiliary voltages output is switchable from 24 VDC to 5 VDC.

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7788.5150: Incremental Input A, B

The unit provides two inputs at terminal 5 and 7 for HTL signals.
The characteristics of the incremental input (PNP, NPN, Namur or Tri-State) can be set in the GENERAL
MENU.

Wiring of the incremental inputs:

PNP

NPN

Namur

Tri-State

Unconnected PNP inputs are always “LOW” and unconnected NPN inputs are always “HIGH”.
All inputs are designed to receive impulses from electrical impulse sources.

Notice for mechanical switching contacts:
When exceptionally mechanical contacts are used, please connect an external capacitor between GND (-)
and the corresponding input (+). A capacity of 10 µF will reduce the input frequency to
20 Hz and miscounting due to contact bouncing will be eliminated.

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7788.5155: Incremental Input A, /A, B, /B

The unit provides two pulse inputs at terminal 5, 6, 7 and 8 for HTL/RS422 signals.
The characteristics of the incremental input can be set in the GENERAL MENU.

Wiring of the incremental inputs:

RS422

HTL DIFFERENTIAL

HTL PNP, single ended

HTL NPN, single ended

Unconnected PNP inputs are always “LOW” and unconnected NPN inputs are always “HIGH”.
All inputs are designed to receive impulses from electrical impulse sources.

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Control Inputs

The three control inputs at terminal 10, 11 and 12 have HTL PNP characteristics.
In the COMMAND MENU the programmable functions for the control inputs can be assigned. Available
functions are: reset the display value, display switching, locking the touch screen or release the lock
function of the control or relay outputs.

Wiring of the control inputs:

Unconnected control inputs are always “LOW”.
All inputs are designed to receive impulses from an electronic impulse source.

Notice for mechanical switching contacts:
When exceptionally mechanical contacts are used, please connect an external capacitor between GND (-)
and the corresponding input (+). A capacity of 10 µF will reduce the input frequency to
20 Hz and miscounting due to contact bouncing will be eliminated.

Analog Output (Option AO/AR)

A 16 bit analog output is available at terminal 13 and 14 / 15
This output can be configured and scaled in the ANALOG MENU.

The following configuration is possible:

• Voltage output: -10 … +10 V

• Current output: 0 … 20 mA

• Current output: 4 … 20 mA

The analog output is proportional to the reference source and is referenced to potential AGND.
AGND and GND are internally interconnected.

Important:
A parallel operation with voltage and current output at the analog output is not allowed.

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Serial interface (Option AO/AR/CO/CR)

A serial interface (RS232 or RS485) is available at terminal 16, 17 und 18.
This interface can be configured in the SERIAL MENU.

The serial interface RS232 or RS485 can be used:

• for easy setup and commissioning of the units

• to modify settings and parameters during operation

• to read out internal states and actual measuring values by PC or PLC

The following drawing shows the connection to a PC by using a standard Sub-D-9 connector:

Connection of the RS232 interface:

Connection of the RS485 interface:

Control-Output (AO/AR/CO/CR)

Four control outputs are available at terminal 20, 21, 22 and 23.
Switching conditions can be set in the PRESELECTION MENU. The output Ctrl. Out1 – 4 are fast PNP
outputs with a switching capability of 5 – 30 Volt / 200 mA per channel. The switching states is displayed
(display with unit and status bar) as C1 … C4.

The switching voltage of the outputs must be applied to input terminal 19 (COM+).
In case of switching inductive loads it is advisable to use external filtering of the coils.

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Wiring of the control-outputs:

AC Power supply (Option AC)

The unit accepts AC supply from 115 to 230 V at the terminals 24 and 25. The power consumption
depends on the level of the supply voltage with aprox. 3VA and the additional current required at the
auxiliary voltage output.

Devices with option AC can also be supplied with a DC voltage between 18 and 30 VDC at terminals 1
and 2.

Relay-Output (Option RL)

Two relay outputs with potential-free changeover contacts are available at terminal 27, 28, 28, 30, 31, 32.
Switching conditions can be set in the PRESELECTION MENU. The switching states are displayed (display
with unit and status bar) as K1 and K4.

AC-switching capacity max. 250 VAC/ max. 3 A / 750 VA
DC-switching capacity max. 150 VAC/ max. 2 A / 50 W

Wiring of the relay outputs

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Display and touch screen

Screen structure for parametrization

The parameter menus and the parameters are described in chapter 5.

Start setup procedure:

To edit the parameters,
press the touchscreen for 3 seconds.

Menu selection:

Select the parameter menu via arrow buttons and
confirm with “OK”.

The menu selection can be terminated
with „C“.

Parameter selection:

Select the parameter via arrow buttons and
confirm with „OK“.

The parameter selection can be terminated with

„C“.

Parameter editing:

Edit the parameter via arrow button up and down,
shift cursor via left and right and save with „OK“.

The parameter editing can be terminated with
„C“.

Parameter changes becomes active only after closing the menu selection.

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Screen structure in operation

The following screens are available during operation. Depending on the device version and the selected
operation mode, not all displays will be shown.

Display with unit and status bar

To switch to the next display, press the
touch screen.

Control - or Relay status are only shown with
option AO, AR, CO, CR or RL.

Large Display (4 digits)

To switch to the next display, press the top of the
screen.

This is only possible with activated parameter
„LARGE DISPLAY“.

Two-line display without units

To switch to the next display, press the top of the
screen.

Two-line display with units

To switch to the next display, press the top of the
screen.

Display with command keys

To switch to the next display, press the top of the
screen.

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Continuation „Screen structure in operation“:

Display for quick start for enter or display
preselection values (PRESELECTION VALUES 1-4)

The desired command key ("Edit Presel." or "Show
Presel.") can be set in the display menu via the
parameter "QUICKSTART BUTTON".
To switch to the next display, press the top of the
screen or the “skip” button.

This is only possible with option AO, AR, CO, CR
or RL

Display with minimum and maximum value

To switch to the next display, press the top of the
screen or the “skip” button.
The minimum and maximum evaluation refers to
the reference source set in the "SOURCE SINGLE"
parameter.

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Error messages

If a measurement result, which is shown on the display, is outside the displayable display range, an error
screen is briefly displayed every two seconds. In this appears, which display value was exceeded or
fallen below.

The error messages described are automatically reset as soon as the corresponding
display value is within the representable range.

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Parameter / Overview-Menu Structure

This section provides an overview of the menus and their parameters. The menu names are printed bold
and the associated parameters are listed under the menu name. Depending on the device version and the
selected operation mode, only the necessary menus / parameters are shown.

Menu / Parameter

GENERAL MENU

OPERATIONAL MODE

ENCODER PROPERTIES

ENCODER SUPPLY

COUNTING DIRECTION

LINEARIZATION MODE

PIN PRESELECTION

PIN PARAMETER

BACK UP MEMORY

FACTORY SETTINGS

SPEED A SETTINGS

DISPLAY VALUE

BASE FREQUENCY

DECIMAL POINT

SAMPLING TIME

WAIT TIME

STANDSTILL TIME

AVERAGE FILTER
SCALE UNITS

SPEED B SETTINGS

DISPLAY VALUE

BASE FREQUENCY

DECIMAL POINT

SAMPLING TIME

WAIT TIME

STANDSTILL TIME

AVERAGE FILTER
SCALE UNITS

Menu / Parameter

COUNTER A SETTINGS

FACTOR

SET VALUE

DECIMAL POINT

SCALE UNITS

SECOND MODE

SECOND SET VALUE

SECOND DECIMAL POINT

SECOND SCALE UNITS

COUNTER B SETTINGS

FACTOR

SET VALUE

DECIMAL POINT

SCALE UNITS

SECOND MODE

SECOND SET VALUE

SECOND DECIMAL POINT
SECOND SCALE UNITS

COLLECTION SETTINGS

DECIMAL POINT FREQUENCY

SCALE UNITS FREQUENCY
DECIMAL POINT COUNTER
SCALE UNITS COUNTER

SCALING SETTINGS

SOURCE
FACTOR

DIVIDER
ADDITIVE VALUE

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Menu / Parameter

PRESELECTION VALUES

PRESELECTION 1

PRESELECTION 2

PRESELECTION 3

PRESELECTION 4

PRESELECTION 1 MENU

SOURCE 1
MODE 1

HYSTERESIS 1

PULSE TIME 1

OUTPUT TARGET 1

OUTPUT POLARITY 1

OUTPUT LOCK 1

START UP DELAY 1

EVENT COLOR 1

PRESELECTION 2 MENU

SOURCE 2
MODE 2

HYSTERESIS 2

PULSE TIME 2

OUTPUT TARGET 2

OUTPUT POLARITY 2

OUTPUT LOCK 2

START UP DELAY 2

EVENT COLOR 2

PRESELECTION 3 MENU

SOURCE 3
MODE 3

HYSTERESIS 3

PULSE TIME 3

OUTPUT TARGET 3

OUTPUT POLARITY 3

OUTPUT LOCK 3

START UP DELAY 3

EVENT COLOR 3

PRESELECTION 4 MENU

SOURCE 4
MODE 4

HYSTERESIS 4

PULSE TIME 4

OUTPUT TARGET 4

OUTPUT POLARITY 4

OUTPUT LOCK 4

START UP DELAY 4

EVENT COLOR 4

Menu / Parameter

SERIAL MENU

UNIT NUMBER

SERIAL BAUD RATE

SERIAL FORMAT

SERIAL INIT

SERIAL PROTOCOL

SERIAL TIMER

SERIAL VALUE

MODBUS

ANALOG MENU

ANALOG SOURCE
ANALOG FORMAT

ANALOG START

ANALOG END

ANALOG GAIN

ANALOG OFFSET

COMMAND MENU

INPUT 1 ACTION

INPUT 1 CONFIG

INPUT 2 ACTION

INPUT 2 CONFIG

INPUT 3 ACTION

INPUT 3 CONFIG

DISPLAY MENU

START DISPLAY
SOURCE SINGLE
SOURCE DUAL TOP
SOURCE DUAL TOWN
LARGE DISPLAY
COLOR

BRIGHTNESS

CONTRAST

SCREEN SAVER

UP-DATE-TIME

FONT
QUICKSTART BUTTON

LINEARISATION MENU

SOURCE
P1(X)

P1(Y)

P2(X)

P2(Y)

…

P23(X)

P23(Y)

P24(X)

P24(Y)

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General Menu

OPERATIONAL MODE

This parameter specifies the selected measuring function.

0

A SINGLE

Input A is the pulse input. (single-channel measurement)

1

A PULSE B DIR

Input A is the pulse input.
Input B determines the direction: for example, "LOW" = forward "HIGH" = backward

2

SUM A+B

Sum: counts impulses A + impulses B and frequency A + frequency B

3

DIF A-B

Difference: counts pulses A - pulses B and frequency A - frequency B

4

RATIO B/A

Ratio: Frequency and counter ratio of both channels (channel B / channel A).
Note: Interpretation of the result with 4 decimal places in the format +/- x.xxxx

5

%-DEVIA B/A

Deviation: percentage deviation from channel B to channel A.
Note: Interpretation of the result with 2 decimal places in the format +/- xxx.xx%

6

A/B 90 x1

Up / down counter for pulses with 2x90 ° offset
(simple edge evaluation x1)

7

A/B 90 x2

Up / down counter for pulses with 2x90 ° offset
(double edge evaluation x1)

8

A/B 90 x4

Up / down counter for pulses with 2x90 ° offset
(fourfold edge evaluation x1)

ENCODER PROPERTIES (for 7788.5150)

This parameter determines the characteristics of the pulse input for 7788.5150.

0

PNP

PNP (switch to +)

1

NPN

NPN (switch to -)

2

NAMUR

Connect sensor (–) to GND and sensor (+) to input (A or B)

3

TRI-STATE

Tri-State for push-pull encoders/ sensors

ENCODER PROPERTIES (for 7788.5155)

This parameter determines the characteristics of the pulse input for 7788.5155.

0

RS422

RS422 standard

1

HTL DIFFERENTIAL

HTL differential

2

HTL PNP

HTL PNP single ended (switch to +)

3

HTL NPN

HTL NPN single ended (switch to -)

ENCODER SUPPLY (only for 7788.5155 available)

This parameter defines the voltage of the auxiliary supply output (Aux-Out).

0

24VDC SUPPLY

24 VDC encoder supply

1

5VDC SUPPLY

5 VDC encoder supply

COUNTING DIRECTION

With this parameter the direction of rotation / direction of counting of the pulse inputs (input A and B) can be
reversed.

0

FOR. A / FOR. B

Direction of rotation / direction of counting of both pulse inputs (A and B) forward

1

REV. A / REV. B

Direction of rotation / direction of counting of both pulse inputs (A and B) reverse

2

FOR. A / REV. B

Direction of rotation / direction of counting input A forward and input B reverse

3

REV. A / FOR. B

Direction of rotation / direction of counting input A reverse and input B forward

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Continuation “General Menu”

LINEARIZATION MODE

This parameter defines the linearization function. See chapter 6.1.

0

OFF

No linearization

1

1 QUADRANT

Linearization in the 1. quadrant

2

4 QUADRANT

Linearization in all 4 quadrants

PIN PRESELECTION

This parameter defines the PIN-code to lock the quick start of the menu PRESELECTION VALUE for entering the
preselection values. (Master PIN 6079).
This Lock function is only useful in conjunction with active lock function in PIN PARAMETER.

0000

No lock

…

9999

Access after entering PIN-Code 9999

PIN PARAMETER

This parameter defines the PIN-code for lock function of all parameters (master PIN 6079).

0000

No lock

… 9999

Parameterization of the unit after entering PIN-code 9999

BACK UP MEMORY

0

NO

No back memory –up by power failure

1

YES

Backup memory by power failure, actual value will be saved

FACTORY SETTINGS

0

NO

No default values are loaded

1

YES

Load default values of all parameters (grey marked default values)