MKS GV 210 User manual

control – motion – interface
mks Maschinen-Kontroll-Systeme GmbH
Zwischen den Wegen 32
D-78239 Rielasingen - Germany
Tel. [phone]
Fax [phone]
[email protected]
www.mks-control.com
GV21001e_e_A5.doc / Jul-07 Page 1 / 11
GV 210
Cross Switcher and Splitter
for Incremental Encoder Signals
In1
Control 1
Control 2
In2
Out1
Out2
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
•Universal encoder interface, applicable as level converter, encoder splitter and
encoder cross switch
•Two encoder inputs A, B, Z and /A, /B, /Z, adjustable to either TTL/RS422 level or to
HTL (10-30 volts) level
•Two signal outputs A, B, Z and /A, /B, /Z, likewise adjustable to either TTL/RS422 or
HTL (10-30 volts) level
•Contactless and bounce-free switch-over between the encoder channels, by remote
control signals
•Power supply 12-30 volts DC, auxiliary output 5 volts for encoder supply
Operating Instructions

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Safety Instructions
•This manual is an essential part of the unit and contains important hints about
function, correct handling and commissioning. Non-observance can result in
damage to the unit or the machine, or even in injury to persons using the
equipment !
•The unit must only be installed, connected and activated by a qualified electrician
•It is a must to observe all general and also all country-specific and application-
specific safety standards
•When this unit is used with applications where failure or maloperation could cause
damage to a machine or hazard to the operating staff, it is indispensable to meet
effective precautions in order to avoid such consequences
•Regarding installation, wiring, environmental conditions, screening of cables and
earthing, you must follow the general standards of industrial automation industry
•- Errors and omissions excepted –
Version: Description:
GV21001b/ Feb.05 /af/hk Original version released
GV21001c/ Jul. 05 /hk Terminal assignments and coding (X1 – X5)
GV21001d/ Aug.05 /hk Clarification RS422 /differential and HTL /single-ended operation
GV21001e/ Jul.07 /hk Corrections TTL-single-ended, outlines and dimensions

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Table of Contents
1. Applications....................................................................................................4
1.1. Dual level converter .................................................................................................4
1.2. Encoder splitter (dual output)...................................................................................4
1.3. Encoder signal switcher ...........................................................................................5
2. Connection Diagram .......................................................................................6
2.1. Power supply ............................................................................................................6
2.2. Control inputs ...........................................................................................................6
2.3. Encoder inputs..........................................................................................................6
2.4. Outputs.....................................................................................................................7
3. The Front LEDs ................................................................................................8
4. Switch Settings...............................................................................................9
5. Dimensions ...................................................................................................10
6. Technical Specifications...............................................................................11

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1. Applications
1.1. Dual level converter
In1
Control 1
= LOW
Control 2
= HIGH
In2
Out1
Out2
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
Both inputs can be individually set to either TTL/RS422 standard with A, /A, B, /B, Z, /Z
channels, or to HTL 10-30 V standard with A, B, Z channels
The output format can again be selected individually for each output.
The outputs provide always all signals including the inverted channels, even when no inverted
signals are applied to the input.
With Control input 1 = LOW (or unconnected) and Control input 2 = HIGH the signal ways are as
shown in the drawing above, featuring two independent level converters.
1.2. Encoder splitter (dual output)
In1
Control 1
= LOW (n.c.)
Control 2
= LOW (n.c.)
In2
Out1
Out2
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
HTL 10-30V
or RS422
N.C.
A, /A, B, /B, Z, /Z A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
Input 1 is used as encoder input, and Input 2 remains unconnected. The input characteristics
can be set to either TTL/RS422 standard with A, /A, B, /B, Z, /Z channels or to HTL 10-30 V
standard with A, B, Z channels only
The output standard can again be selected individually for each output. The outputs provide
always all signals including the inverted channels, even when no inverted signals are applied to
the input. Control1 and Control2 remain unconnected with this application.

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1.3. Encoder signal switcher
In1
Control 1
LO = In1, Hi = In2
Control 2
LO = In1, HI = In2
In2
Out1
Out2
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
Both inputs can be individually set to either TTL/RS422 standard with A, /A, B, /B, Z, /Z
channels, or to HTL 10-30 V standard with A, B, Z channels
The output standard can again be selected individually for each output.
The outputs provide always all signals including the inverted channels, even when no inverted
signals are applied to the input.
Inputs Control1 and Control2 select the signal ways:
LOW: The corresponding output is connected to input 1
HIGH: The corresponding output is connected to input 2
•With input setting TTL/RS422, the inputs will accept RS422 signals and TTL signals
and also HTL signals with 10 – 30 volts level, always provided that every signal is
accompanied by the appropriate inverted signal (Symmetric differential input)
•Operation with asymmetric signals (single ended with no inverted signal) requires to
set the input to HTL and to apply 10-30 volts level to the A, B, Z inputs.
Where you like to apply single-ended signals with 5 volts TTL level, please ask for a
special version which is available on request.

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Connection Diagram
Z Z
B
B
A
A
5.2V
GND
Input 2
1
2
3
4
5
6
7
8
LED
DIL Switch
1234567891 2345678
Z Z
B
B
A
A
GND
24V
Output 2
Z Z
B
B
A
A
5.2V
GND
Terminal strip 9-pos.
Input 1
Terminal strip 8-pos.
Z
Z
B
B A A
GND
24V
Output 1
987654321
87654321
321
21
Control 1
GND
24V
GND Power supply
Control 2
X1
X2 X3
X4X5
X6
Connectors are mechanically
coded and therefore not
interchangeable
Terminal strip 9-pos.Terminal strip 8-pos.
1.4. Power supply
The unit requires a 12–30 volts DC power supply via the 2-position power terminal on the front
side (terminal 1 = +, terminal 2 = GND)
The current consumption is about 50 mA (aux. voltages and outputs unloaded)
1.5. Control inputs
The control inputs are accessible via the 3-position terminal strip on the front. They are in LOW
state when unconnected. To switch the inputs to HIGH state, a signal from +10 to +30 volts
must be applied to the corresponding terminal.
1.6. Encoder inputs
The input lines can be configured for different requirements by DIL switch setting. The
following input formats can be used:
•Single-ended signals, channels A, B and Z (without inverted inputs) with
HTL (10–30 volts) level only
•Differential signals A, /A, B, /B, Z, /Z, according to RS422, signal level 2 to 7 volts
•Differential signals A, /A, B, /B, Z, /Z at HTL level (10-30 volts)

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A, B and Z may at any time also be independent single signals, e.g. from proximities, photocells
etc. Since the level of every channel is selected individually (see DIL-switch), it is possible to
use different levels on the inputs. Consequently it is e.g. possible to take the position
information from the A, /A, B and /B channels of a RS422 encoder, but to add the
corresponding Z index pulse as a HTL signal from a remote photocell
With HTL signals, the switching threshold lies between 6.5 and 8 volts. The input uses an
internal pull-down resistor of 5kOhms.
Every of the two input terminals provides two auxiliary voltage outputs for easy encoder supply:
+5.2 volts/125 mA and +24 volts*/125 mA
*) Output = power supply voltage – 2 volts
1.7. Outputs
The outputs provide push-pull characteristics. When set to TTL/RS422 level, the corresponding
output swing is always 5 volts. When set to HTL, the output swing depends on the power
supply input (12 – 30volts).
All outputs are short-circuit-proof.
At any time the signal and the appropriate inverted signal are both available at the output, even
when no inverted signal is applied to the input.

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2. The Front LEDs
The green LED is lit as soon as a power supply voltage is applied to the unit.
The yellow LED indicates the state of the Control inputs and the basic function of the unit:
Yellow LED off: Control1 and Control2 are either both LOW or both HIGH at the same time. In
this case the unit operates as a splitter (both outputs are connected to the same input)
Yellow LED on: Control1 and Control2 have different states. In this case the unit operates as a
dual level converter or as a switcher (the outputs are connected to different inputs)

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3. Switch Settings
The DIL switch sets level and standard of inputs and outputs:
0=OFF DIL switch settings
1=ON
8 7 6 5 4 3 2 1
0Output 1: TTL / RS422
1Output 1: HTL
0 Output 2: TTL / RS422
1 Output 2: HTL
The output levels are 5 volts
with TTL setting and
correspond to the power
supply voltage with HTL
setting
0
(Z)
0
(B)
0
(A)
Input 1: differential
(A, /A, B, /B, Z, /Z)
Both, input and inverted input
must be available. Levels from
2 to 30 volts are acceptable.
1
(Z)
1
(B)
1
(A)
Input 1: single-ended
(A,B,Z) with HTL level
Inverted inputs remain open,
level must be HTL 10-30 volts
0
(Z)
0
(B)
0
(A)
Input 2: differential
(A, /A, B, /B, Z, /Z)
Both, input and inverted input
must be available. Levels from
2 to 30 volts are acceptable.
1
(Z)
1
(B)
1
(A)
Input 2: single-ended
(A,B,Z) with HTL level
Inverted inputs remain open,
level must be HTL 10-30 volts
Please set unused input lines to “single-ended” HTL at any time!
It is not mandatory to use the same level for all channels of an input. The indications (A), (B), (Z)
show which switch position is responsible for which channel.
When e.g. positions 3 and 4 are set to “0” and position 5 is set to “1”, Input1 would accept
A, /A, B, /B at RS422 standard, and the Z index as a HTL single-ended signal.
Consequently it is possible to e.g. generate an Index from a remote photocell, whereas the
impulses come from the RS422 encoder simulation of a drive system.

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4. Dimensions
102 (4.016”)
91 (3.583”)
82.5 (3.248”) 102(4.016”)
22.5
(0.886”)
1
2
3
4
5
6
7
8
OFFON
Side view
Top view
Front view

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5. Technical Specifications
Power supply Vin :
12 - 30 Vdc
Power consumption : 50 mA (no-load operation)
Aux. encoder supply output : 5.2 volts and Vin – 2 volts, 2x 125 mA
(short-circuit-proof)
Max. frequency : 400 kHz (RS422), 200 kHz (HTL)
Inputs : Single-ended A, B, Z (2x), 10 – 30 volts or
differential A, /A, B, /B, Z, /Z (2x), 2 – 30 volts
Outputs : Push-pull A, /A, B, /B, Z, /Z (2x)
Level 5 – 30 volts, 30 mA (short-circuit-proof)
Signal propagation delay : approx. 600 nsec.
Ambient temperature : Operation: 0° - 45° (32 - 113 °F)
Storage: -25° - +70° (-13 - 158 °F)
Weight : ca. 100 g
Conformity and standards : EMC 89/336/EEC: EN 61000-6-2
EN 61000-6-3
LV73/23/EEC: EN 61010-1