GSM I/O Modem R45

GSM I/O Modem R45
R45 MODEM EXPANDER MODULE p 2
R45man.wpd/080212/TF
TELEFRANG AB
Contents
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GSM I/O Modem
R45
Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Description
Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
R45 consists of a GSM
modem together with 16
isolated digital inputs for
supervision and alarm
sensing as well as 7 digital
outputs with power relays.
Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Additionally it includes two
RS232 serial ports and a
SIOX field bus port.
Hereby
it
can
communicate with many
types of devices e.g. in a
telecom station. The ports
are
isolated from the
supply to avoid grounding
problems in such stations.
Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
R45 is flexibly supplied from 20 - 50 VDC.
Parameter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Its enhanced PLC programmability permits it to work standalone, controlling I/O
signals, as a data collector, as a protocol converter or as a modem multiplexer.
SIOX Address Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pulse Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ports’ Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Modem-to-SIOX LINK Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Modem-to-Serial LINK Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PLC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SIOX Message Transfer for R45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Versions: R45, 48 V powered GSM I/O Modem in an 18 * 18 cm
polycarbonate enclosure: Order number: 6R45
Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
R45 MODEM EXPANDER MODULE p 3
Power Supply
R45 MODEM EXPANDER MODULE p 4
Terminal Blocks
All R45 versions may be powered from a 20 - 50 V DC supply, nominally 24 V,
delivering minimum 4 W. An internal switching regulator consumes less current
when the voltage increases. An extra 1 W is required if the SIOX bus is supplied
from the unit via the jumpers on the left side.
Installation and Start-Up
The standard polycarbonate case is typically wall mounted using the four corner
holes. This mounting does not affect the IP 65 case sealing. Cables must be
entered via cable glands which are adequately tightened to prohibit the cords
from being pushed into/pulled out of the unit. The unit is a Class II equipment
intended for Installation Category II. Please follow the instructions described
under “Safety Precautions” on page 15.
Typically, a two-wire, low capacitance twisted pair is used for the SIOX communication bus. Shielded cables may be used, but unless a correct strategy for
shield grounding is adopted, they may prove to be of little benefit. The total
resistance of the bus must be low, typically below 2 * 50 Ω.
At delivery, the SIOX bus is opto isolated from the rest of the R45. When it is
intended as the master on the bus, current can be supplied by installing two
jumpers marked ++ and G close to the DI16 screw terminal. The SIOX bus will
then be galvanically referenced to the negative supply and output up to 25mA
at 20 - 25 V for DC supplies from 20 - 50 V . A connected K32 should the be
jumpered to generate 0 mA, to eliminate the need for a separate supply for it.
The SIOX bus of R45 is, different from most slave modules, polarised. When
it is used together with e.g. a K32 from another master, polarity of the bus wires
must be observed, since both R45 and K32 will have their bus minus wired to
the negative supply. If the polarity is wrong, the two units will short out one
another until corrected.
Indicator LEDs
A row of six LED indicate the operation of the R45:
- A red LED flashes when the GSM modem is operating.
- A red LED marked “C” is controlled by the PLC application, typically when
a call is connected.
- Two yellow LEDs, “2" and “1", indicate when either RS232 port is active.
- A green LED marked “SIOX” is lit when there is voltage on the SIOX bus.
- A green LED is lit when there is power to the R45.
When a proper supply and the SIOX bus have been connected, the communication can be tested and operating modes and application PLC program entered.
Unless otherwise requested, the module is preset at the factory to communicate
as a slave at 4800 bits/s using address 01. General principles for the SIOX bus
and communications are described in a separate manual, the "SIOX System
Description". Changes in operation modes are brought about by Parameter
Setup Strings communicated over the SIOX bus, see page 9.
R45 MODEM EXPANDER MODULE p 5
R45 MODEM EXPANDER MODULE p 6
SIOX Address Setup
Digital Outputs
When using the SIOX bus, the R45 can simultaneously be used as a Master,
calling other units on the SIOX bus, and as a Slave, capable of handling a GSM
call and linking to the bus after connection. Slave mode is also used for setting
up the module for a specific application. As a Slave, R45 must have a specified
address, which is set in the internal EEPROM in the module. At delivery, the
address is set to 01. It is best changed by connecting the R45 to a SIOX bus
and using the R45SETUP.dff program. This is loaded from the www.siox.com.
The same program is used for all other special setups.
7 relay outputs are provided, controllable in parameter 0/8. Each relay contact
is connected to three screw terminals, permitting normally open or normally
closed state when the R45 supply is disconnected. The contact rating is 8 A 250
VAC with an 8mm creepage distance.
A special feature is added to help recover "lost" modules, i.e. when an unknown
bit rate and/or address is selected, or the PLC runs a program that erroneously
alters parameters affecting the communication. To recover such a module, a
pushbutton is available on the component board. Carry out the following steps:
1. Press the button and apply power. The module will now communicate at
4800 bits/s using address 63 and with the PLC, Master, Links and any
options disabled.
2. Check and reconfigure the EEPROM of the module for proper operation.
3. Restart the module without pressing the button.
Digital Inputs
16 digital inputs are provided, grouped in four groups of four inputs each. Each
group has one common terminal, and the inputs are opto-isolated from the rest
of the module. When one input terminal is pulled minimum 20V and maximum
60V positive or negative with respect to its common terminal, a flag is set in
parameter 0/9 in the R45. This permits each group to be activated by normal
positive or negative signals in external units, or connected to the R45 supply.
Some versions of R45 include an isolated low power output to supply inputs via
the two terminals marked - VH + .
Each DI can be inverted so that a bit is set when the corresponding input is
inactive. This is set in parameter 0/7.
For noisy signals, a software filter, common for all inputs, can be set in parameter 0/3 to a filter time between 1 ms and 1 s.
Pulse Counter
The input signal DI1 is also connected to a pulse counter, incrementing on each
activation of the input at 500 Hz max rate. The counter parameter 10/ may be
read, preset or cleared at any time. It folds over to 0 after 65536 pulses.
Analog Input
One analog input is prepared for flexible measuring. The two external screw
terminals measure differential signals from 1 - 10 V with a common mode of up
to ±100 V with respect to the negative supply terminal..
RS232 Communication
R45 features two standard RS232 ports for connection to serial devices via one
of the 5-pole screw terminals in the module. The ports are individually opto
isolated from the rest of the module. The signals are described with R45 used
as a DCE, ready for connection to a PC. Typical interface cables are shown
below:
Terminal
Function
R
T
CTS
RTS
Signal Ground
Transmit from R45
Receive to R45
Output from R45 (=buffer free)
Input to R45, with 10 kΩ pullup
9p socket
to a PC
5
2
3
8
7
25p plug
to a modem
7
2 (TD)
3 (RD)
4 (RTS)
5 (CTS)
RTS and CTS are used for hardware handshaking and can be checked in parameters 0/5 and 0/6. The bitrate, parity and number of data and stop bits can be
set up in here too, see page 12.
Ports’ Multiplexing
Characters received are stored in a 128 character ring buffer, where they can
be linked to the modem or fetched, either automatically by the firmware in R45
or by an application specific PLC program. Correspondingly there exists a 128
character buffer which empties into the transmit pin. This buffer is filled by a link
from the modem, firmware or by a PLC program.
Since the two possible serial ports use the same buffers, messages must be
R45 MODEM EXPANDER MODULE p 7
linked to the intended serial port. For this purpose, the first port to send a
character to the receive buffer will deactivate the CTS lines of the other,
preventing it from transmitting. The yellow LED for the receiving port will light.
Any data intended for the ports is transmitted on the active port.
20 seconds after last character in either direction, the priority is cleared and both
channels are allowed to communicate. A PLC program in R45 can reactivate the
CTS lines in advance if necessary.
When text is stored into the transmit buffer without any recent priority, a bit in
parameter 0/4 is checked to define 0, 1 or 2 as the preferred port to send the
message. When such a message is received from the modem, it is typically
preceded by a Receive Code and a digit from 0 to 2. The PLC can then read the
Receive Code Flag and set CTS for the port to use in parameter 0/5/0/6 or other
special conditions in parameter 0/4. Refer to page 8, PLC.
Modem
The R45 includes a GSM/GPRS wireless modem of the type Siemens TC63 or
TC65. Depending on the R45 version, it includes either an internal antenna or
an SMA connector for an external GSM antenna of any standard type.
Note that the connector body is coupled directly to the negative supply and must
be isolated from the metal case and external grounds. A hockey puck antenna
is a good solution since it is sturdy, contains its own ground plane and is
isolated from the mounting hardware.
The R45 board includes a SIM card holder. Press gently on the top surface of
the holder and push upwards. The top flap can now be raised and a SIM card
be inserted. Make sure that the diagonal edge of the card is in the outer right
corner of the holder. Press again on the surface and push down to lock the card.
When power is applied to the unit, the left red LED will start flashing after a few
seconds, showing that the modem is seeking a base station.
The modem communicates at 9600 bps with the R45 via one transmit and one
receive buffer, each 128 bytes. These same buffers are also used for Text calls
over the SIOX bus in R45. In this way, an external station on the SIOX bus can
send texts to the modem and collect answers from it. If not applicable, Text calls
via the SIOX bus to the R45 should be avoided. Normal Data Mode and Setup
Mode calls will not interfere with the buffers.
The two buffers can also be handled by a PLC application in the R45. “DX”
instructions transfer EEPROM or RAM texts via the output buffer to the modem,
and “KX” instructions fetch text from the modem via the input buffer. So, for
example, an initialising message can be sent to the modem, a call identified
R45 MODEM EXPANDER MODULE p 8
and one of the ports subsequently linked to the modem. Note that the “S” flag
in the accumulator parameter hex 13 must be off during these operations,
otherwise the texts operate on the serial receive/transmit buffers.
Modem-to-SIOX LINK Mode
One standard firmware function in R45 is a LINK mode, where all characters
received from the GSM modem are copied to the SIOX bus, independent of the
bit rates and format. All characters received on the SIOX bus are copied to the
modem. Hereby, a PC with a modem can make direct contact with the SIOX
bus. The SIOX communication firmware operates as usual, but with 1 character
delay in either message direction.
This LINK mode is enabled by setting xx8x in parameter 0/4, see page 11. For
extended buses with multiple SIOX nets chained via modem links, only the first
SIOX bus can be allowed to echo characters from TD via SIOX back to RD. In
the other positions, parameter 0/4 should be set to xxAx, which cancels the echo
without disturbing characters originating from modules on the SIOX bus.
Modem-to-Serial LINK Mode
Another LINK flag connects the serial buffers with the modem buffers. Independent of the serial speed and format, the combination buffers 256 bytes in
either direction without changing the contents. This link is enabled by setting
xx4x in parameter 0/4, see page 12.
PLC
R45 includes PLC programmability, which can be used for accessing modules
on the SIOX bus, communicating with the serial ports, communicating with the
modem and setting up connections. It has full control over the Links and other
controlling flags such as the two serial CTS flags to redirect serial output.
The “DX” instructions permit characters, values and text strings, fetched from
either RAM or EEPROM to be transmitted, in most cases to the modem or the
connected remote station. An “S” flag, bit 1 in parameter hex 13, permits
redirecting the text to the current serial port, using their serial buffer.
“KX” and “KCASE” fetch single characters from the receive buffer of the Modem
to identify particular parts of the incoming messages. As above, the “S” flag
redirects the fetch to the serial buffer.
In order to identify a typical start sentinel from a serial port or the modem, a
R45 MODEM EXPANDER MODULE p 9
more efficient option is available in the firmware. The PLC may set a memory
flag (parameter 0/8) e.g. when the modem signals a Data Carrier Detect. If the
receive buffer collects a code of max four letters as stored in parameter 20/-21
plus an arbitrary character, this character will be saved in parameter 24. The
Input flag is activated and the output flag cleared, the PLC collects the arbitrary
character and selects serial port or any other action. The same procedure is
possible from the serial ports with other flags and parameters 22-23 e.g. to
select which central to call when serial data is received.
The program area covers the Banks 0/1-0/4 (parameters 0/0/80/ - 0/27F). Each of
the eight tasks can be defined to start in any one of these banks as long as the
program counter does not cross the 0/0/-FF limit. As usual, parts of the program
can be created as Overlays in virtual memory and loaded by an instruction from
EEPROM to one of the operating banks. The allowed area for such overlays is
parameters 0/280/ - 3FFF = bytes 0/50/0/ - 7FFF.
SIOX Message Transfer for R45
For details about the communication types it is recommended to read the "SIOX
System Description".
A Data Mode Communication is only used for compatibility with older SIOX
systems and contains status information.
Example single data communication when R45's address is 0/9:
From central (hex notation):
Answer from R45:
C9
0/0/
Address 9
0/1
0/3
Status read
String Setup Mode Communications use the same address as Data Mode but
permit a broader scope of information. The string from the central may be a
string of characters to be buffered and the module answers with a string from
another buffer.
Also, a 16-bit parameter value in the module may be read or written with a
choice of RAM or EEPROM. In this case, the message must contain a parameter number. A typical communication for reading the digital inputs,
parameter 0/9, in String Mode will be:
R45 MODEM EXPANDER MODULE p 10
From central:
C0/
0/9
Address 9
Answer from R45:
30/
0/
31
30/
BE
4F
| read 10/ | Sign-off/Checksum
30/
31
0/
1
I1 is active
30/
0/ |
BE
70/
Sign-off/Checksum
In order to increase fetch time over a GSM link, R45 handles a Length extension
to the protocol, where up to 16 parameters can be read in one message.
To permanently change a serial bit rate to 9600, a write data = 0/0/0/9 to
EEPROM parameter number 0/4 (or 0/5) must be done:
From central:
C0/
0/9
43
34
Address 9 |
C
4 |
EEPROM write
Answer from R45:
30/
0/
30/
0/
30/
30/
39
0/
0/
9 |
Value 0/0/0/9 (hex)
30/
30/
39
0/
0/
9 |
Value 0/0/0/9 (hex)
BF
77
Sign-off/Chksm
BF
77
Sign-off/Checksum
String Text Mode Communications are similar to Setup accesses but allow up
to 80 arbitrary characters in each direction to be transferred between a SIOX
bus master and the Modem Buffers. They are distinguished by hex 40/ being
added to the second character in the message address.
Parameter Setup
The R45 contains two types of memory: RAM for temporary storage for as long
as the module is connected to a power supply, and EEPROM for long-term
storage of working modes, parameters and initialization values after a power
disconnect. At power-up, the EEPROM variables are automatically copied to the
RAM, and the information is used to control the module. All EEPROM setup
values may be copied again if data = FFFF is written to the first parameter
(number 0/0/). This initiates a full soft reset, using previous EEPROM value for
this parameter.
By using String Mode commands, any variable may be read or modified at any
time, either temporarily in RAM or permanently in EEPROM. In the latter case,
the corresponding RAM cell is modified as well. Information in controlling
parameters immediately affect the function of the module.
Below follows a description of each parameter number. All parameter values are
shown in hexadecimal notation.
R45 MODEM EXPANDER MODULE p 11
R45 MODEM EXPANDER MODULE p 12
Pos.
hex
Value Function
hex
Pos.
hex
Value Function
hex
0/0/
FFFF Soft Reset copies EEPROM to RAM.
0/4
8xxx
Ignite activates the modem after a power-down. It may be set
indefinitely in EEPROM but is automatically cleared in RAM.
4xxx
Data Carrier Detect submitted by the modem when a call is
connected on the GSM net.
8xxx
Permit Write to all reserved RAM cells.
4xxx
Inhibit String Text Mode, where the PLC can submit text answers
which otherwise might empty the Modem Receive Buffer.
2xxx
x3xx- SIOX Transmission Speed 3 - 9 = 300 - 19200 bits/s.
-x9xx Other values are invalid and revert to 4800 bits/s. To change, a
write to EEPROM must be made, followed by a powerdown/power-up or a Soft Reset.
Request To Send submitted by the modem when it can collect
buffered characters.
1xxx
x8xx
Clear To Send signals to the modem that the buffer is available.
Flush Modem Receive Buffer The flag clears automatically.
x0/xx
x4xx
Flush Modem Transmit Buffer The flag clears automatically. x2xx
Flush Serial Receive Buffer The flag clears automatically.
x1xx
Flush Serial Transmit Buffer The flag clears automatically.
xx8x
xx2x
Direct Link of all messages between the SIOX bus and the
modem.
No Echo. When Direct Link is active, characters received from
the modem and retransmitted on the SIOX bus are not echoed
back to the modem again.
xx4x
Direct Link between current Serial port and Modem.
xx1x
Link SIOX Text messages to/from the current Serial port.
Automatic SIOX Transmission Speed switches between 1200 19200 bits/s until it matches the received bit rate. No reset is
needed when auto speed is set.
xx0/1-xx3F Group Address if parameter 0/2 is set to x8xx.
0/1 0/1xx-3Fxx Module Address (1 - 63), EEPROM or temporary value
8xxx
Master Flag is set by the PLC program when the R45 is to start
communications over the SIOX bus on its own.
4xxx
Link Status is set when the Modem transmits to the SIOX port.
xx8x
Inhibit Spy/Master Communications permitting PLC use of parameters 40/ - 4F.
xx1x
0/2
0/3
Compress multiple equal text characters in SIOX String Mode
answers. Compressed received SIOX texts are expanded
correctly but not interpreted when passing the modem.
0/0/0/0/ Options reserved for customer specific functions. xx8x enables
Group addresses in parameter 0/0/
xxx1/2
0/5-6
Preferred Serial Port defines which port 1/2 that is to transmit
when no recent communication has been carried out. CTS
must be active and the serial device signalling RTS.
Hxxx RS232 Hardware Status. 2=RTS;
1=CTS (auto set after 20 sec, else possible to force)
x8xx
RS232 Mode, 8 Data Bits , else 7 Data Bits.
x4xx
RS232 Mode, 2 Stop Bits , else 1 Stop Bit.
MMxx PLC Mask for Q8 - Q1. Refer to PLC manual.
x2xx
RS232 Mode, Parity Enable, else no Parity Bit.
xxDD Inputs Debounce Time. DD = 0/0/ = no debounce, i.e. 1 ms.
DD = 0/1 to FF is debounce time in 4 ms steps.
x1xx
RS232 Mode, Odd Parity, else Even Parity.
xxx3-xxx9
RS232 Bit Rate set-up: 300-19200 or default 4800.
R45 MODEM EXPANDER MODULE p 13
R45 MODEM EXPANDER MODULE p 14
Pos.
hex
Value Function
hex
Pos.
hex
Value Function
hex
0/7
IIII
12
TTxx PLC Timer Tick 1/1200-256/1200.
0/8
Input Inversion Mask.
0/ = normal digital input status.
1 = invert digital input status.
0/xxx- Code Flags for port multiplexing. Setting b15 active enables
-Fxxx receiving a code sequence of max 4 characters and a letter from
the modem. b14 is set active when a modem text matches the
four letters in parameters 20/-21and b15 is cleared.
Setting b13 active enables receiving a code sequence of max 4
characters and a letter from the current serial port. b12 is set
active when a serial port text matches the four letters in parameters 22-23 and b13 is cleared.
xxRR PLC Run Flags.
13
XXXX PLC Flag/Accumulator Bits.
xxx2 “S” flag redirects PLC texts from the modem to the serial ports.
14
VVVV PLC 16-bit Accumulator .
15
TTTT PLC 16-bit Timer .
16
E0/xx- Real Time Clock fine tuning. 0/0/xx = no adjustment.
-1Fxx
Bits 14 and 12 are not changed by parameter writes.
x8xx
Key Indication is set if the internal key is pressed.
x3xx
LED Control for the two serial port indicators LED2 and LED1.
xx0/0/- Real Time Clock 10 ms counter, reset at 99*10 ms.
-xx63
17
xx0/0/- Digital Outputs Register for PLC bits Q8 - Q1, controlling the
-xxFF modem indicator LED C and the seven output relays.
0/0/0/0/- Real Time Clock seconds counter. Running a PLC DATE
-FFFF instruction changes it to a minutes+seconds counter.
18-19
Reserved for Real Time Clock month/date/weekday/hour.
0/0/0/0/- Digital Inputs Register for 16 digital inputs.
-FFFF
1A-1F
Free Memory for PLC use.
0/A
IIOO
20/-21
Modem Select Code, four characters when parameter 0/8=8xxx
0/B
MMSS Buffer Help Pointers for modem and SIOX Text.
22-23
Serial Port Select Code, four characters when param. 0/8=2xxx
0/C
IIOO
Buffer Pointers In/Out for modem transmit, automatic.
0/D
IIOO
Buffer Pointers In/Out for serial receive, automatic.
0/E
RRTT Buffer Help Pointers for serial receive/transmit, automatic.
0/F
IIOO
10/
XXXX Pulse Counter for DI1.
11
BBxx PLC Bank. Refer to PLC manual.
0/9
Buffer Pointers In/Out for modem receive, automatic.
Buffer Pointers In/Out for serial transmit, automatic.
xxPP PLC Program Counter.
24
MMxx Modem Code Fifth Letter, trailing a valid code.
xxSS Serial Port Code Fifth Letter, trailing a valid code.
25-37
Free Memory for PLC use.
38
0/0/C8- Supply Voltage Level, 200..600 ~ 20..60V.
-0/258
39
0/0/0/0/- Analog Input Value for AI1 for 0 - 16 V with a resolution.
-0/680/ of 0,01 V. Various options may scale or offset this value.
R45 MODEM EXPANDER MODULE p 15
Pos.
hex
Value Function
hex
R45 MODEM EXPANDER MODULE p 16
Environmental Specifications
Operating/Storage Temperature
3A-3F
Free Memory for PLC use.
40/-7F
Communication Parameter Pairs for Spy or PLC use.
Mechanical Specifications
80/-27F
PLC Program Area, refer to PLC manual.
Case Size
280/-2BF
Modem Receive Buffer (EEPROM=free user area)
Weight
2C0/-2fF
Modem Transmit Buffer (EEPROM=free user area)
30/0/-33F
Serial Ports Receive Buffer (EEPROM=free user area)
340/-37F
Serial Ports Transmit Buffer (EEPROM=free user area)
40/0/-3FFF
User Area (EEPROM only). PLC overlays and logs can be
defined here. Parameters 280/-3FFF are not copied from
EEPROM to RAM at startup.
Safety Precautions
The R45 module is a Class II equipment, i.e. the use of a protective earthing is
not required because of the insulation provided between the primary circuit
(mains/relay contacts) and the secondary circuit.
The R45 module is intended for Installation Category II (Overvoltage Category)
which defines the impulse withstand voltage. Installation Category II corresponds to normal local distribution level, or “Mains Plug” level.
Before any service of the unit is undertaken, the disconnect devices must
be operated to disconnect power to the unit.
All cables must be entered via cable glands that are adequately tightened to
prohibit the cords from being pushed into/pulled out of the unit. Glands must be
in compliance with the UL94 flame class 94V-0.
Cables connected to the mains supply must use dedicated cable glands in order
to prohibit mixing of signal and power cords.
Due to electric shock hazard, the cover must always be mounted during
normal operation.
-20 ... +55
180 x 180 x 58
400
EC
mm
g
Electrical Specifications
Supply Voltage
Min
Typ
Max
20
48
60
Internal 24 V Consumption
With 7 relays active
60
120
Relay Contact Rating
Digital Input Active Level
Input Impedance
SIOX Bus Current Generator
Analog Input Level
Common Mode
Input Impedance
Resolution
Accuracy 25 EC
Assistance
on safety and technical matters is available from:
TELEFRANG AB
Varbergsgatan 8
S-412 65 GÖTEBORG
SWEDEN
Tel:
Fax:
E-mail:
+46 31 40 30 60
+46 31 40 20 25
info @telefrang.se
V DC
mA
mA
8
250
±20
Unit
A
VAC
22
V
kΩ
25
mA
100
10
1
+16 V
±100 V
kΩ
mV
%
0
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