Hohner IT 210 User manual

Operating Manual
Level Converter, Direction Signal Decoder
and programmable Pulse Divider
IT 210
Your partner for standard and special designs
- precise, reliable and fast -

www.hohner-elektrotechnik.de 2
Hohner Elektrotechnik GmbH
Gewerbehof 1
D-59368 Werne
Phone +49 - 2389 - 9878-0
Fax +49 - 2389 - 9878-27
E-Mail [e-mail]
Web www.hohner-elektrotechnik.de
Operating Manual
motrona GmbH, Zeppelinstraße 16, DE - 78244 Gottmadingen, Tel. [phone], Fax [phone], [e-mail], www.motrona.com
IT210
Level Converter, Direction Signal Decoder and programmable pulse
divider
Product features:
•Level Converter (RS-422, HTL Single Ended, HTL Differential,
TTL and and vice-versa)
•Implementation between the two types of representations for the
direction of rotation (A/B 90 °, A/B Direction and vice versa)
•Adjustable division ratio of directional A / B pulses
•Adjustable division ratio for the Z pulse
•Reset of the Z divider by external input (defined setting)
•Zero setting of the A / B / Z divider by external input (defined Start / Stop)
•Z divider can also be used as an independent second divider
•Limit frequency up to 1 MHz, depending on the input format
•Push-pull outputs direct SPS control
•9 to 30 VDC power supply

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Version:
Description:
It210_01a/CF/ Oct
2018
Version 1
Legal notices:
All contents included in this manual are protected by the terms of use and copyrights of Hohner
Elektrotechnik GmbH. Any reproduction, modification, usage or publication in other electronic and printed
media as well as in the internet requires prior written authorization by Hohner Elektrotechnik GmbH.
Table of Contents
1. Safety Instructions and Responsibility .......................................... 5
1.1 General Safety Instructions ................................................................... 5
1.2 Use according to the intended purpose ................................................ 5
1.3 Installation ............................................................................................. 6
1.4 Cleaning, Maintenance and Service Notes ............................................ 6
2. Introduction ................................................................................. 8
3. Block diagram .............................................................................. 8
4. Terminal Assignments and Connections ....................................... 9
5. Progarmmable A/B Divider ........................................................ 11
5.1. Level converter A/B Pulse (A/B Divider: All OFF) ................................. 11
5.2. Input/Output Mode Converter (A/B Divider: All OFF) ......................... 11
5.3. Setting the A/B Divider (at A/B Dir to A/B 90°) .................................... 12
5.4. Setting the A/B divider (for all other modes) ...................................... 13
5.5. Setting to zero the A/B divider with ZERO_A Signal ............................ 15
5.6. Informationen over the signal change A/B Dir .................................... 15
6. Programmable Z Divider ............................................................ 16
6.1. Pegel conversion Z Puls (Z Divider: all OFF) ......................................... 16
6.2. Setting the Z Divider ............................................................................ 16
6.3. Location and width of the Z pulse ....................................................... 17
6.4. Independent Z Divider ......................................................................... 18
6.5. Automatic generation of a Z pulse ...................................................... 19
6.6. Reset the Z divider with ZERO_Z Signal ............................................... 19
7. Error Output .............................................................................. 20
8. Dimensions ................................................................................ 21
9. Technical Specifications ............................................................. 22

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Version:
Description:
It210_01a/CF/ Oct
2018
Version 1
Legal notices:
All contents included in this manual are protected by the terms of use and copyrights of Hohner
Elektrotechnik GmbH. Any reproduction, modification, usage or publication in other electronic and printed
media as well as in the internet requires prior written authorization by Hohner Elektrotechnik GmbH.
Table of Contents
1. Safety Instructions and Responsibility .......................................... 5
1.1 General Safety Instructions ................................................................... 5
1.2 Use according to the intended purpose ................................................ 5
1.3 Installation ............................................................................................. 6
1.4 Cleaning, Maintenance and Service Notes ............................................ 6
2. Introduction ................................................................................. 8
3. Block diagram .............................................................................. 8
4. Terminal Assignments and Connections ....................................... 9
5. Progarmmable A/B Divider ........................................................ 11
5.1. Level converter A/B Pulse (A/B Divider: All OFF) ................................. 11
5.2. Input/Output Mode Converter (A/B Divider: All OFF) ......................... 11
5.3. Setting the A/B Divider (at A/B Dir to A/B 90°) .................................... 12
5.4. Setting the A/B divider (for all other modes) ...................................... 13
5.5. Setting to zero the A/B divider with ZERO_A Signal ............................ 15
5.6. Informationen over the signal change A/B Dir .................................... 15
6. Programmable Z Divider ............................................................ 16
6.1. Pegel conversion Z Puls (Z Divider: all OFF) ......................................... 16
6.2. Setting the Z Divider ............................................................................ 16
6.3. Location and width of the Z pulse ....................................................... 17
6.4. Independent Z Divider ......................................................................... 18
6.5. Automatic generation of a Z pulse ...................................................... 19
6.6. Reset the Z divider with ZERO_Z Signal ............................................... 19
7. Error Output .............................................................................. 20
8. Dimensions ................................................................................ 21
9. Technical Specifications ............................................................. 22

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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. Non-conforming 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 8). 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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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 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 (see chapter 8).
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.hohner-elektrotechnik.de.
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.

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During normal operation no maintenance is necessary. In case of unexpected
problems, failures or malfunctions the device must be shipped for back to
themanufacturer 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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2. Introduction
The IT210 is a universal interface using with incremental measuring systems.
The device allows the solution of the following problems:
•Level conversion (RS-422, HTL single ended, HTL differential, TTL and vice
versa)
•Division of two-track A / B pulses with adjustable ratio 1: 1 to 1: 2048
•Division of the Z pulse with adjustable ratio 1: 1 to 1: 256
•External HTL signals for various functions
•Implementation between the two types of representations for the direction of
rotation (A/B 90 °, A/B Dir and vice versa, Division possible)
All settings are made on the DILL switches on the housing. The device consists of a
compact housing with screw terminals and can be mounted on a DIN rail.Block
diagram
3. Block diagram

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4. Terminal Assignments and Connections
The input pulses are connected to the screw terminals X4. The unused inputs must
remain open (HTL Single Ended as opposed to HTL Differential), or possibly be
completed (unused Z-track in RS-422 or HTL Differential format). On the X4 screw
terminal 9, 8, an auxiliary voltage of
+5.5 V / 250 mA is available for the encoder supply.
Depending on the DIL switch setting, the pulses are available at the outputs of the
screw terminal X3 in HTL or RS-422 format and are independent of the connected
format. In the HTL setting, the height of the pulse level at the push-pull outputs
corresponds to the input voltage at the supply input X1.
The Control HTL inputs (reset of the internal dividers) to X2 have PNP characteristics
and must be switched against + to activate the function. The supply voltage is
connected to X1.
It should be noted that all inputs and outputs refer to the same ground potential
GND, which at the same time represents the negative pole of the device supply. At
any time, the total transmission characteristics of encoder, external components and
capacity of the cable must ensure proper signals at the input terminals of the unit,
with respect to the levels, the shape and the phase displacement A/B.

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The green LED signals operational readiness (power switched on).
The yellow LED signals an input error. (RS-422 or HTL Differential only)
An HTL Error Signal (input error, only for RS-422 or HTL differential) is available on
the X3 screw terminal 1. (Error = low)
Basic settings:
At the front DIL switches DIL1 and DIL2, some basic presets have to be made when
commissioning. These determine the input/output mode, the input and output
format, as well as settings of the Z Pulse.
Changes in the settings on the DIL switches will only be taken over
by the device after the supply voltage has been switched on again!
Configuration
DIL1 (Front 8-pole)
Function
1
2
3
4
5
6
7
8
ON
Level for HTL Single Ended: U
L
< 10V / U
H
>14V
OFF
Level for HTL Single Ended: U < 5V / U >
9V
ON
ON
Input format: TTL
ON
OFF
Input format: HTL Single Ended
OFF
ON
Input format: RS-422
OFF
OFF
Input format: HTL Differential
ON ON
Z-pulse length: 1 Z-Puls, independent of A
/ B
OFF ON
Z-pulse length: ynchronized with AOUT /
BOUT
ON OFF
Z-pulse length: synchronized with AIN /
BIN
OFF OFF
Z-pulse length: 1 Z-Puls, a depending on
A/B
ON
Input Mode : A/B Dir (Pulse / Direction)
OFF
Input Mode : A/B 90°
ON
Output Mode : A/B Dir (Pulse / Direction)
OFF
Output Mode : A/B 90°
ON
ZERO_A : Zero setting delayed, no errors
OFF
ZERO_A : Zero setting immediately, error
possible
Configuration
DIL2 (Front 3-pole)

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1
2
3
Function
ON
Z-pulse: Generation of a Z-pulse from AIN & BIN, AOUT &
BOUT
OFF
Z-pulse: Z input is used
OFF
Test mode deactivated: OFF
ON
Output format : HTL Differential, HTL Single Ended (UX1(2) – 2V)
OFF
Output format: RS-422, TTL (5V)
5. Progarmmable A/B Divider
5.1. Level converter A/B Pulse (A/B Divider: All OFF)
If the A/B pulse have to be switched unchanged from the input to the output (no
division, no change in length and position), then the DIL switch position listed below
must be chosen. A level conversion is only possible if the input mode (A/B 90 ° or A/B
dir) corresponds to the output mode. (DIL1/6 = DIL1/7).
Divider [A/B]
DIL5
(Left 8-pole)
DIL6
(Left 3-pole)
Comment
1
2
3
4
5
6
7
8
1
2
3
Binary value
1 2 4 8
16 32 64
128 256 512
1024
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
AIN = AOUT, BIN = BOUT
5.2. Input/Output Mode Converter (A/B Divider: All OFF)
If input mode differs from output mode and in addition, the DIL switches DIL5 and
DIL6 of the divider A/B are all set to OFF, the following signal characteristics are set
up at the output.
Case 1: Input A/B 90°, Output A/B Dir
DIL1/6 = OFF, DIL1/7 = ON with A/B Divider setting: DIL5, 6 = all OFF
If the direction of the A/B 90 ° signal changes at the input, a change takes place at
the BOUT output signal. (A/B dir). There is no division.
Case 2: Input A/B Dir, Output A/B 90°
DIL1/6 = ON, DIL1/7 = OFF with A/B Divider setting: DIL5, 6 = all OFF

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If a change takes place at the BIN input signal (A/B dir), the direction of the A/B 90 °
signal changes at the output. Here is a division 1:2, from the input in relation to the
output.
5.3. Setting the A/B Divider (at A/B Dir to A/B 90°)
The division ratio for the A/B pulses is set at the DIL switches DIL5 and DIL6. The
switch positions use a binary code like shown in the subsequent list. (DIL1/6 = ON,
DIL1/7 = OFF).
Divider [A/B]
DIL5
(Left 8-pole)
DIL6
(Left 3-pole)
Comment
1
2
3
4
5
6
7
8
1
2
3
Binary value
division =>
1 : (Binary value +1) x2
1 2 4 8
16 32 64
128 256 512
1024
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 1 => 1 : 4
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 2 => 1 : 6
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 3 => 1 : 8
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 4 => 1 : 10
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 5 => 1 : 12
...etc.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
1 : 1026
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
1 : 2050
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
1 : 4096
Example: Input A/B dir, output A/B 90 ° with A/B division 1:6 (setting DIL6, 5: OFF ON
OFF)
Division 1:2: See Input/Output Mode Conversion (A/B Divider: All OFF)

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5.4. Setting the A/B divider (for all other modes)
The division ratio for the A/B pulses is set at the DIL switches DIL5 and DIL6. The
switch positions use a binary code like shown in the subsequent list. (DIL1/6 = OFF,
DIL1/7 = X).
Divider [A/B]
DIL5
(Lefts 8-pole)
DIL6
(Left 3-pole)
Comment
1
2
3
4
5
6
7
8
1
2
3
Binary value
Division =>
1 : Binary value +1
1 2 4 8
16 32 64
128 256 512
1024
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 1 => 1 : 2
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 2 => 1 : 3
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 3 => 1 : 4
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 4 => 1 : 5
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 5 => 1 : 6
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 6 => 1 : 7
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
value 7 => 1 : 8
...etc.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
1 : 513
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
1 : 1025
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
1 : 2048
Example: Input A/B 90°, output A/B 90 ° with A/B division 1:6 (setting DIL6, 5: OFF
ON OFF
Example: Input A/B 90°, output A/B 90 ° with A/B division 1:3 (setting DIL6, 5: OFF
ON OFF
Example: Input A/B 90°, output A/B 90 ° with A/B division 1:3 (setting DIL6, 5: OFF
ON OFF

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5.5. Setting to zero the A/B divider with ZERO_A Signal
If the DIL switch DIL1/8 is set to OFF, the divider is reset immediately and remains as
long as a high level at the ZERO_A control input is applied. The A/B pulse can be
trimmed by switching. A/B, 90 ° signals can cause illegal states when the ZERO_A is
switched on and off. In the case of A/B dir Signals, the reset is also done at the same
time.
If the DIL switch DIL1/8 is set to ON, the divider will be reset in the zero phase of the
output signals AOUT and BOUT and will remain as long as the signal is attached. This
prevents the miscounting of subsequent circuits. This function can only be applied to
A/B 90°, it is independent of the divider ratio.
If there is a high signal at ZERO_A the A/B divider is reset and has the starting state
AOUT = BOUT = Low. The divider is in a defined state. Depending on the direction of
the input signals, the next split A/B pulse appears immediately after the reset, or
after the set division ratio. The length of the ZERO_A pulse has to be greater than
the period of frequency, than it can be switched off. This feature can be used for
define start and stop.
The Z track can be set to zero with the ZERO_A input. The DIL switch DIL1/8 has been
set to ON, A/B 90 ° output signals have been selected and the Z Pulse length has
been synchronized to the output.
5.6. Informationen over the signal change A/B Dir
Signal changes from B (direction) should appear shortly before or latest at the same
time as the A flank so that the change can be detected correctly.

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6. Programmable Z Divider
6.1. Pegel conversion Z Puls (Z Divider: all OFF)
If the Z pulse have to be switched unchanged from the input to the output (no
division, no change in length and position), then the DIL switch position listed below
must be chosen.
Divider [Z]
DIL4 (right 8-pole)
Comment
Binary value
1
2
3
4
5
6
7
8
1 2 4 8
16 32 64
128
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ZIN = ZOUT (ZERO_Z = Low)
The output at the level conversion can be set to zero (ZOUT = Low) with the control
input X2(3) ZERO_Z = High.
The function is active as long as there is a high level at the control input. The Z pulse
can be trimmed by switching.
6.2. Setting the Z Divider
The programming of the Z divider is subject to the same rules as the programming of
the A/B divider.
Divider [Z]
DIL4 (right 8-pole)
Comment
Binary value
Divider => 1: Binary value +1
1
2
3
4
5
6
7
8
1 2 4 8
16 32 64
128
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1 : 2
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
1 : 3
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
1 : 4
OFF
OFF
ON
ON
ON
ON
ON
ON
1 : 253
ON
OFF
ON
ON
ON
ON
ON
ON
1 : 254
OFF
ON
ON
ON
ON
ON
ON
ON
1 : 255
ON
ON
ON
ON
ON
ON
ON
ON
1 : 256

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6.3. Location and width of the Z pulse
If the DIL switch DIL4 of the Z divider is completely set to OFF, the Z Pulse is
forwarded from the input directly to the output (see pegel converstion Z Puls).
All pictures in this section assume that the A/B divider is set to 8. The Z Pulse is
divided according to its divider (additionally DIL2/1 on OFF, ZIN is used, Z dividers not
complete on OFF).
Depending on the length or location of the Z Pulses input and through the
synchronization to the input or output signals, the Z pulse at the output can fluctuate
around an input or output period (not with DIL1/5 = DIL1/4 = ON).
DIL1 Front
8-pole
Wide Z pulse (a full encoder turn)
4
5
ON
ON
The pulse width at the output corresponds to the full distance
between two Z pulses at the input.
DIL1
Front
8-pole
Narrow Z pulse (1/4 output-periode)
(Only applicable to input signals A/B 90°, DIL1/6 = OFF)
4
5
OFF
ON
The pulse width at the output corresponds to ¼ period of pulse width at
the input.

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DIL1
Front
8-pole
Narrow Z pulse (1/4 output-periode)
(Only applicable to output signals A/B 90°, DIL1/7 = OFF)
4
5
ON
OFF
The pulse width at the output corresponds to ¼ period of pulse width at
the output.
In this operation mode, only division ratios may be used, which together with the
A/B divisor deliver clear and completely results. A division with rest causes that the Z
pulse at the output can fluctuate around an input or output period.
Example:
If at an encoder with 1000 pulses the A/B devider were set to 3 and at the same time
the Z Pulse divider were set to 2, then the Z Pulse at the output would have to
appear after 666,666 pulses, which is not physically possible.
6.4. Independent Z Divider
The Z divider works independently of the A/B track, the directional evaluation of the
A/B signal does not affect the counting sequence (additionally DIL2/1 on OFF, ZIN is
used, Z divider not completely set to OFF).
DIL1
Front
8-pole
Wide Z pulse (a full encoder turn)
4
5

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ON
ON
The pulse width at the output corresponds to the full distance between
two
Z pulses at the input.
6.5. Automatic generation of a Z pulse
If the DIL switch DIL2/1 is set to ON, a Z pulse can be automatically generated.
The Z input is ineffective and does not need to be connected (Z divider not
completely set on OFF).
DIL1 Front
8-pole
Narrow Z puls e (1/4 output- or input-period)
4
5
OFF
ON
The Z pulse is generated from the input signal A/B. Each input period
generates one count for the Z divider.
The Z pulse width at the output corresponds to 1/4 period of the pulse
width of the input signal A/B (Only applicable to input signals A/B 90°,
DIL1/6 = OFF).
ON
OFF
The Z pulse is generated from the output signal A/B. Each output
period generates one count for the Z divider.
The Z pulse width at the output corresponds to 1/4 period of the pulse
width of the output signal A/B (Only applicable to output signals A/B
90°, DIL1/7 = OFF).
6.6. Reset the Z divider with ZERO_Z Signal
The Z divider can be reset by applying a high signal to the control input ZERO_Z.
The reset will act immediately and as long as the signal is applied.
Depending on the direction of the A/B track, the next Z pulse appears immediately
after the reset or according to the set division ratio (not at the independent Z
divider).
The reset of the Z divider can also be performed in case of automatic generation of
the Z pulse.
By setting the Z-divider = all OFF, the setting of the ZERO_Z input causes an
immediate zero setting of the output ZOUT (see level conversion Z pulse).
Note the special case in which the ZERO_A signal can also set the Z output to zero
(see Setting to zero of the A/B divider with ZERO_A signal)

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7. Error Output
An HTL error signal is available on the X3 screw terminal 1. (Error = Low).
The error (short circuit or line break) is triggered by the input lines A, /A, B, /B or Z,
/Z (Test mode OFF, DIL2/2 = OFF). The corresponding channel can be selected with
the DIL switch DIL3 (right, 3-pole).
If the DIL switch DIL3/1 is set to OFF, no errors are evaluated on the A, /A line, the
DIL switch DIL3/2 refers to the line B, /B and the DIL switch DIL3/3 to the line Z, /Z.
An error can only be detected in RS-422 or HTL differential format, all other formats
do not trigger an error.