SZComark Cj-KFx1 User manual

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Multiple Channels Analog/Digital/Serial RS232/485/422
to Fiber Optic Converter
Manual
Summary
This series converter is a type of multi-channel analog signal, the digital signal, and serial ports RS232/485/422 fiber conversion
multiplexing equipment. It adopts the latest ARM chip, which is quite stable, reliable and low power, supports 1 ~ 4 channels the
contact closure signal, 1 ~ 4 channel analog (voltage/current), 1 ~ 2 channel RS232/485 or a channel RS422 signal in the fiber
alone or multiplexing transmission. It requires no change of the user communication protocol and solves the problem of
electromagnetic interference, ground ring interference and thunder destroys, which greatly improve the signal reliability, safety
and confidentiality, at the same time solve the problem of traditional mode of short distant transmission. Protection grade is IP30,
strengthen cabinet, 35mmDIN guide installation, industrial standard DC24V power supply, possess the protection function of
power polarity reverse connect.
Specification
Analog signal interface:
Voltage/Current analog signal (0-5)V/(0-10)V/(4-20)mA optional.
Support 1 ~ 4 channel voltage/current analog signal.
Reference accuracy 0.5% @ 25°C
Updaterates (1000-2000)Hz
Signal resolution 10bit
Timedelay <10ms
Voltage signal interface parameters: Voltage transmission rang （0-5）VDC or （0-10）VDC ;Input impendency 100KΩ
(4-20 mA) electrical flow interface) parameters: Maximum load capacity 500Ω,Input resistance 51Ω
Contact closure signal/TTL digital signal interface:
Independent 1 ~ 4 channel input, 1~4 channel output.
Dry contacts input: short circuit or open.
Relay output form: FORM C(SPDT): Relay-operating time 6ms ;Relay release time 3ms ;Total switch time 10ms;Relay
contacts capacity 1A/24VDC
Transmission delay time: 2 ms
The maximum working switch frequency: 50Hz
RS232、RS485 and RS422 interface:
Four configuration mode: double channel RS232 / double channel RS485/One channel RS232 + One channel RS485/ One
channel RS422
Work rate set (by mfg only)：0~115.2Kbps at any rate
Optical Interface
Wave length: multi-mode 850nm、1310 nm; single mode 1310 nm、1550nm
Fiber type: multi-mode 50/125um、62.5/125um、100/140um;single mode 8.3/125 um、9/125um、10/125um
Transmission distance: multi-mode 2km, single mode 20km.
Fiber interface type: ST/SC/FC (optional); ST (standard configuration).
Power and protection
Power: Industrial standard24V (+/-5%) power supply, With power polarity and reverse connect protection
5-pin Industrial Pluggable Screw Terminal
Mechanical
Dimensions: 136mm×54mm×106mm (H×W×D)
Casing: IP30 protection, Metal case

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Installation: 35mmDIN-Rail, Wall Mounting.
Weight:800g
Environmental
Operating Temperature:-40 to 7℃5℃
Storage Temperature: -40 to 8℃5℃
Ambient Relative Humidity: ≤90% (non-condensing)
Warranty
Warranty period : 5 years
Overall Dimension
Frontview Topview
LED Indicators
LED Description Function

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PWR Power indicator Power on when work normally.
ANA
Analog channels
(current, voltage) state
indicator
1. Off--no analog signal (I/V) input or output.
2. Blinks--when there are input/output channels and its values are in the
normal range between (4-20 mA / 0 – 5V/ 0-10V).
3. On--when there are input/output channels and its values are over the
normal range.
OPT No optical and data
receiving indicator
1. On—optical module no receiving channel or abnormal.
2. Blinks—optical module receiving channel normal and has data
receiving.
3. Off—optical module receiving channel normal, but no data receiving.
DIGI
Digital channel
receiving indicator
(dry contact or TTL
signal)
1. Off—the device has no digital signal input function.
2. On—the device has digital signal input function.
COM1-2 Serial port state
indicator
1. Off—no data receiving on corresponding serial port.
2. On—receiving date on corresponding serial port.
Analog/digital/serial
This series product can choose 1 ~ 4 chs analog signal, 1 ~ 4 chs digital signal, 1 ~ 2 chs serial signals independently using or
division multiplexing, which realize one-way or two-way optical fiber transmission. To describe the direction of signal transfer for
convenience, it makes artificial distinction between optical transmitter and optical receiver. The equipment should match with
each other and every port must connect with the right one correspondingly when using. The factory should arrange the
production according to the goods requirement and the right channel order named 1, 2, 3, and 4.
Analog signal (Voltage or current) interface

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Note: analog interface is composed of precision electronic components, wiring errors or continuous overload input,
which will cause permanent damage to device.
The input signals in this analog transmission channel through the optical fiber transmission, will be reductive out in the channel
corresponded to the analog output interface.
1) Each channel for the analog inputs can select three signal modes, including (4-20) mA, (0-5) VDC, and (0-10) VDC input. Ai
- is the reference earth wire for each input signal, while Ai + is the positive signal wire for each input signal.
2) Each channel for the analog outputs can also choose corresponding three signal mode, including (4-20) mA(Please choose
four-wire input method when connecting to PLC) ,(0-5)VDC and (0-10)VDC output. Ai - is the reference earth wire for each
output signal, while Ai + is the positive signal wire for each output signal.
Note: output current at the receiving end A- can not be “0”, current load and receiving end need to be powered
independently when necessary and add current signal isolator between the two devices.
3) The (4-20)mA analog fiber optic converter support four-wire system standard, please note the wire connection method while
connecting with two-wire system transducer, no support connect power to fiber optic converter terminal Ai+, Ai-, or will
damage the machine. Please refer below two-wire and four-wire transmitter wiring.
The CC signal interface:
Current output channel equivalent circuit diagram Voltage output channel equivalent circuit diagram
Voltage output channel equivalent circuit diagram 4~20Ma current output channel equivalent circuit diagram
2 wire current transmitter wiring diagram 4wirecurrenttransmitter wiring diagram

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Corresponding channel of the digital output interface through the optical fiber transmission.
RS232、RS485,RS422 Serial interface
1) TX1, GND1 and RX1 are connected correspondingly to the RS232 launch, ground and receiving signal line in the first channel.
2) TX1, GND1 and RX1 are connected correspondingly to the RS232 launch, ground and receiving signal line in the second
channel.
Different functions in specific cases, the port function as follows
Function Connection ports definition
Dual RS232model
TX1 GND(data ground) RX1 TX2 GND(data ground) RX2
Dual RS485 model A2 SHIELD(shield ground) B2 A1 SHIELD(shield ground) B1
RS232+RS485model TX1 GND(data ground) RX1 A1 SHIELD(shield ground) B1
RS422 model TX+ SHIELD(shield ground) TX- RX+ SHIELD(shield ground) RX-
Remark: RS232+RS485 model, Channel 1 RS232, Channel 2 is RS485.
Wiring Connection
1. Fiber connection methods: Cj-MF series belongs to single optical port device, suitable for point to point connection. As
shown in the figure below, the optical fiber must cross connection, namely the RX connect other side TX, and TX to RX
accordingly.
2. V+, V-, SHIELD respectively connect with anode, cathode of DC power supply and shielding ground.
DIN-Rail Installation
In order to use in industrial environments expediently, the device adopt 35mm DIN-Rail installation, the installation steps as
Current input channel equivalent circuit diagram Voltage input channel equivalent circuit diagram

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follows:
Step 1: Examine the DIN-Rail attachment
Step 2: Examine DIN Rail whether be firm and the position is suitability or not.
Step 3: Insert the top of the DIN-Rail into the slot just below the stiff metal spring.
Step 4: The DIN-Rail attachment unit will insert into place as shown below.
Troubleshooting
Fault Symptoms What to Do
PWR off Check and ensure the power supply meets the requirement, and terminal
wiring is correct or not.
OPT off Check the fiber port connection, the length and type is correct or not.
ANA on Received analog signal value over normal range.
Package Checklist
Please check accessories completely when open the box.
Packing list is as follows:
Multi-channel fiber optic converter (with industrial terminal block for power equipment)
Product specification
Product warranty card
Cautions
The Voltage of power supply should be within 24VDC，or it may damage the product.
When the fiber port is not in use, please cover and protect it.
To avoid causing serious damage to your eyes, do not stare directly into the Laser Beam.
When use the relay, please conform to rating power requirement.
Keep low impedance with protective grounding by DIN rail or grounding cable for the product.
Application
Electric power system, transportation, energy monitor and industrial control field
Order Information
Model Specifications and introduce
Cj-KFx1
1~4 channel unidirectional CC signal fiber optic converters, dry contact closure input SPDT Form C relay
output, SM fiber 0 ~ 20Km,ST/SC/FC (optional).
Cj-KFx2 1~4 channel bidirectional CC signal fiber optic converters, dry contact closure input SPDT Form C relay

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output, SM fiber 0 ~ 20Km,ST/SC/FC (optional).
Cj-AFx1
1~4 channel unidirectional analog signal fiber optic converters, 4-20mA, SM fiber 0 ~ 20Km, ST/SC/FC
(optional).
Cj-AFx2
1~4 channel bidirectional analog signal fiber optic converters, 4-20mA, SM fiber 0 ~ 20Km, ST/SC/FC
(optional).
Cj-VFx1
1~4 channel unidirectional analog signal fiber optic converters, 0-10VDC, SM fiber 0 ~ 20Km, ST/SC/FC
(optional).
Cj-VFx2
1~4 channel bidirectional analog signal fiber optic converters, 0-10VDC, SM fiber 0 ~ 20Km, ST/SC/FC
(optional).
Cj-SFx1 1~2 chs serial signal fiber optic converters, RS232/.RS485/RS422, SM fiber 0 ~ 20Km, ST/SC/FC (optional).
Cj-MF42
Analog signal digital signal fiber multiplexer, 2 chs analog signal, 2 chs digital signal, single and dual
multiplexing transmission optional, used for SM fiber 0 ~ 20Km,ST/SC/FC (optional).
Cj-MF62
Analog signal digital signal fiber multiplexer, 1 ~ 4 chs analog signal, 1 ~ 4 chs digital signal, 1 ~ 2 chs
RS232/485/422 multiplexing, single and dual multiplexing transmission optional, used for SM fiber 0 ~
20Km,ST/SC/FC (optional).