Seneca K107A User manual

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MI00101-4-EN
K107A / K107B
Half-duplex RS485 serial bus with 3-point insulation
General Description
The K107A and K107B modules are half duplex serial buses with 3-point insulation.
Although both modules feature:
Timed automatic direction switching.
Communication speeds that can be configured by dip-switch,
They differ in the type of interface present on the X side:
K107A: RS485
K107B: RS232B
Technical features
Power-supply :
Consumption :
19,2..30 Vdc
max 22 mA at 24 Vdc
under normal operating conditions.
Type:
Capacity:
Terminator:
Protection:
K107A :RS485, K107B: RS232B
32 standard nodes for K107A
Yes for K107 A, No for K107B
Up to 30 Vdc
RS485 half-duplex
32 standard nodes
Yes
Up to 30 Vdc
Type:
Capacity:
Terminator:
Protection:
Power supply features
X-side port characteristics
Y-side port characteristics
EN

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Insulation voltage :
Protection :
Environmental conditions :
Storage temperature:
Dissipation:
Signalling by LED :
Connections :
Wire section :
Wire stripping :
Box :
Dimensions and weight :
Reference standards :
1.5 kV between each pair of ports
IP20
Temperature: -20 … +65°C
Humidity: 10 … 90% non-condensing
Altitude: up to 2000 m. a. s. l.
-40..+85 °C
Lower than 500 mW
Data Presence on X port, Data presence on Y port,
inverted connection on X port and inverted connection
on Y port.
Cable clamp terminals and bus (rear connector for DIN
and K-BUS bar)
0,2..2,5 mm2
8 mm
PBT, black
6,2 x 93,1 x 102,5 mm, 46 g.
EN61000-6-4/2002 (electromagnetic emission, industrial
environment) EN61000-6-2/2005 (electromagnetic immunity,
industrial environment) EN61010-1/2001 (safety).
All circuits must be insulated from the other circuits under
dangerous voltage with double insulation. The power supply
transformer must comply with EN60742: “Insulated
transformers and safety transformers”.
Notes: - Use with copper conductor.
- Use in Pollution Degree 2 Environment .
- Power Supply must be Class 2.
- When supplied by an Isolated Limited Voltage/Limited
Current power supply a fuse rated max 2.5Ashall be
installed in the field.
Timed automatic
Optical
1200...115200 bps
by dip-switch
X or Y side terminator, X->Y or Y->X communication
direction inhibition
Signal transmission/processing characteristics
Handshake :
Insulation :
Speed :
Configuration :
Other functions available :
General Technical Features
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Speed (bps) Switching time (ms)
115220 0,13
57600 0,26
38400 0,39
19200 0,78
9600 1,56
4800 3,13
2400
1200
6,25
12,5
The device usually stays with both its communication ports in reception state (idle
status); the first transition (character) detected at one of the ports enables the
corresponding communication channel, while the opposing port becomes the data
outlet by repeating the stream (data flow) received on the first. Whenever the data flow
is interrupted, after a period of time depending on the communication speed set, the
device returns to its previous state of reception on both ports (idle status).The time for
return to idle status is usually around 1.5 characters starting from the reception line's
last active status; in any case however, a different period of time can be selected
whenever required by protocol. The table below indicates switching times on the basis
of the transmission speed set:
Description of operation
Two modules can be used as insulator or repeater for a Full-Duplex connection. In this
case, it is useful that the module installed on the master's Tx line inhibit communication
direction by selecting either the X->Y direction or the Y->X direction; although switching
both dip-switches ON does not cause malfunctions, it inhibits the device with both ports
in transmission.
Signalling by LED on the front panel
LED Meaning
Green Led
on X side
Green Led
on Y side
Central Green Led A blink of the LED when the device is turned on indicates the
presence of voltage.
Flashing: data presence at X-port.
Steady: inverted connection at X port or X -> Y direction
inhibition enabled.
Flashing: data presence at Y-port.
Steady: inverted connection at Y port or Y -> X direction
inhibition enabled.
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Both the K107 A and K107 B modules can be completely configured by dip-switches.
The meaning of the possible dip-switch settings is provided below.
DIP-SWITCH SETTINGS
Transmission speed
3
SW14 5
In all the following tables, the indication means that the DIP-switch is set in 1 (ON);
whenever no such indication is provided, it means that the DIP-switch is set in 0 (OFF).
X->Y DIRECTION INHIBITION
1SW1
Disabled
Enabled
Y Terminator
2SW1
Disabled
Enabled
115200
57600
38400
19200
9600
4800
2400
1200
Y->X DIRECTION INHIBITION
6SW1
Disabled
Enabled
X Terminator (only for the K107A)
7SW1
Disabled
Enabled
Polarizer * (only for the RS232 of the K107 B)
8SW1
Disabled
Enabled
* When installed, the polarizer prevents the RS232 line from capturing noise when left
disconnected
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Installation rules
This module has been designed for assembly on a DIN 46277 rail. Assembly in vertical
position is recommended in order to increase the module's ventilation, and no raceways or
other objects that compromise aeration must be positioned in the vicinity.
Do not position the module above equipment that generates heat; we recommend
positioning the module in the lower part of the control panel or container compartment.
We recommend rail-type assembly using the corresponding bus connector (Code K-BUS)
that eliminates the need to connect the power supply to each module.
K107
0
1
K107
0
1
1 -Attach the module in the upper part of
the rail.
2 - Press the module downwards.
1 -Apply leverage using a screwdriver (as
shown in the figure).
2 - Rotate the module upwards.
Inserting the module in the rail Removing the module from the rail
Using the K-BUS connector
1 - Compose the K-BUS connectors as required in order to obtain the number of positions
necessary (each K-BUS permits the insertion of no. 2 modules).
2 - Insert the K-BUS connectors in the rail by positioning them on the upper side of the rail
and then rotating them downwards.
sIMPORTANT: Pay particular attention to the po ition of the protrudent terminals of the
K-BUS. The K-bus must be inserted in the guide with the protrudent terminals on the left
(as shown in the figure) otherwise the modules are turned upside downs.
-Never connect the power supply directly to the bus connector on the DIN rail.
-Never tap power supply from the bus connector either directly or by using
the module's terminals.
!
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8 mm
0,2..2,5 mm2
Electrical Connections
The module has been designed for spring-type terminal
electrical connections.
Proceed as follows to make the connections:
1 - Strip the cables by 0.8 mm
2 - Insert a screwdriver in the square hole and press it
until the cable lock spring opens.
3 - Insert the cable in the round hole.
4 - Remove the screwdriver and make sure that the cable
is tightly fastened in the terminal.
Power supply
There are various ways to provide the K Series
modules with power.
1 - Direct power supply to the modules by
connecting 24 Vdc power supply directly to
Terminals 7 ( + ) and 8 ( - ) of each module.
2 - Using the K-BUS connector accessory for the distribution of the power supply to the
modules via bus connector, in this way eliminating the need to connect power supply to
each module.
The bus can be supplied from any of the modules; the total absorption of the bus must be
less than 400 mA. Higher absorption values can damage the module. An appropriately
sized fuse must be connected in series to the power supply.
3 - Using the K-BUS connector accessory for the distribution of the power supply to the
modules via bus connector and the K-SUPPLY accessory for the connection of the power
supply.
The K-SUPPLY accessory is a 6.2 mm wide module that contains a set of protections
designed to protect the modules connected via bus against over-voltage loads.
The bus connector can be provided with power using the K-SUPPLY module if the total
absorption of the bus is less than 1.5 A. Higher absorption values can damage both the
module and the bus. An appropriately sized fuse must be connected in series to the power
supply.
15
6
7
8
2
3
4
POWER
SUPPLY
Y SIDE
X SIDE
19.2..30 Vdc
+
-
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K107A Serial port electric connections
X-side serial port:
half-duplex RS485
Y-side serial port:
half-duplex RS485
The use of screened cables is always recommended, and especially whenever the
length of the connections is greater than 3 m.
15
6
7
8
2
3
4
POWER
SUPPLY
Y SIDE
X SIDE
A
B
15
6
7
8
2
3
4
POWER
SUPPLY
Y SIDE
X SIDE
SCH
A
B
SCH
K107B Serial port electric connections
X-side serial port: half-duplex RS232
15
6
7
8
2
3
4
POWER
SUPPLY
Y SIDE
X SIDE
SCH
Tx (out)
Rx (in)
1
5
6
9
PC Serial Port
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Y-side serial port: half-duplex RS485
The use of screened cables is always recommended, and especially whenever the
length of the connections is greater than 3 m
15
6
7
8
2
3
4
POWER
SUPPLY
Y SIDE
X SIDE
A
B
SCH
Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other
European countries with separate collection programs)
This symbol, found on your product or on its packaging, indicates that this product should not be treated as
household waste when you wish to dispose of it. Instead, it should be handed over to an applicable
collection point for the recycling of electrical and electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential negative consequences to the environment and
human health, which could otherwise be caused by inappropriate disposal of this product. The recycling of
materials will help to conserve natural resources. For more detailed information about the recycling of this
product, please contact your local city office, waste disposal service or thè retail store where you
purchased this product.
SENECA s.r.l.
Via Austria, 26 - 35127 - PADOVA - ITALY
Tel. [phone] - Fax [phone]
e-mail: [email protected] - www.seneca.it
This document is property of SENECA srl. Duplication and reprodution are forbidden, if not authorized. Contents of the
present documentation refers to products and technologies described in it. All technical data contained in the document
may be modified without prior notice Content of this documentation is subject to periodical revision.
MI00101-4-EN