Specifications table for model AKR2015
ItemPerformance characteristics
Rated voltage12 to 24V DC
Operating voltage range10.8 to 26.4 V DC
Current consumption200 mA or less (During sending)
Inrush current23 A (when 24 V DC)
Ambient Temperature-10 to +50 degrees
Storage temperature-20 to +70 degrees
Ambient Humidity30 to 85 %RH (at 25 degrees non-condensing)
Storage humidity30 to 85 %RH (at 25 degrees non-condensing)
Breakdown Voltage (Initial)500 V AC for 1 min. (Between power terminal and FG / DSUB connector, Between power terminal and input / output terminal, Between input terminal and output terminal)
Insulation resistance(initial)100 M ohm or more (at 500 V DC)(Between power terminal and FG / DSUB connector, Between power terminal and input / output terminal, Between input terminal and output terminal)
Vibration resistance10 to 55 Hz 1cycle / min. Double amplitude of 0.75 mm, 10 min. on 3 axes
Shock resistance98 m / s2 or more, 4 times on 3 axes
Noise immunity1000 V [p-p] with pulse width 50 ns, 1 micro s (based on in-house measurements)(Power terminal)
Overcurrent protection of power supplyFuse (Rated current: 3.15A)
Weight (Typ.)Approx. 160 g
ve typeDirect sequence spread spectrum (DS-SS)
Transmission distance15 m
ve output6 mW / MHz or less
Frequency2403.328 MHz to 2480.128 MHz
Number of channels76 ch (Select with communication channel switch)
(Note) Adding to the fixed channel, 76 ch (00 to 4B), 89 group channel can be selected. Group channel is the function that it selects connectable channel from several fixed channels automatically. When using repeater function, use with the fixed channel. When using group channel, settable channel numbers are decreased in the same communication area and the communication time becomes longer.
Number of channels in same transmission area15 channels recommended (when select fixed channel)
(Note) It is different according to the mounting conditions, when several channels are used in the same communication area, communication error might occur due to interference radio wave.
Transmission speed1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600, 115,200 bit / s (Selectable with MODE switch)
Communication Style1: N topology (N: 99 units max.)
Repeater function8 repeaters (Between master and slave)
Response timeOFF to ON, ON to OFF: Max. 80 ms
(Note) There are no error without serial communication at 1: 1 topology. Response time: Time from input signal to input terminal to output from output terminal in connected equipment. When input signal is shorter than response time, there is a possibility not to transfer to output side.
InterfaceConforming to RS232C
Communication MethodHalf-duplex
ynchronous systemSynchronous communication method
Transmission formatStop bit: 1 bit
Parity: Not available / Available (odd / even)
Data length: 7bit / 8bit
Data buffer2,048 bytes (Max. data byte size for send and receive one time)
lation methodOptical coupler
Rated input voltage12 to 24 V DC (voltage input)
Rated input currentApprox. 3 mA / when 12 V, Approx. 6 mA / when 24 V
Points per common9 points / common (Signal output, Communication error output)
(Note) In case simultaneously ON of input and output, input number and output number are restricted according to the ambient temperature.
mpedanceApprox. 4 kohm
Operation indicatorLED display (green)
Insulation methodOptical coupler
ypeOpen collector (NPN)
Rated load voltage12 to 24 V DC
Allowable Load Voltage Range10.8 to 26.4 V DC
Max. switching current0.3 A
Max. inrush current1.5 A
leakage current1 micro A or less
voltage drop1.5 V DC or less
External power supply(+, – terminal):Voltage-
External power supply(+, – terminal):Current-
Surge absorberZener diode
ration indicatorLED display
Setting function- Operating mode change (SET, RUN, TEST)
- Communication channel change (CH switch)
- Unit No. change (UNIT No. switch)
- Serial communication setup (MODE switch)
- Slave registration
- Initializing (Factory setting)
- Data holding (When communication error)
Test functionCommunication test: 3-stage LED display (With setting tool, it can do various communication tests such as changing data amount, including repeaters and so on. And it can measure an approximate communication time.)
Field intensity monitor: 3-stage LED display (With setting tool, it can display and record a field intensity of each channel by numeric value.)
LED display- Distinguish master or slave (MASTER)
- On communication, Power on (COM.)
- On setting, Complete setting (SET)
- Error, Alarm, Caution (ALARM)
- Level indication (1, 2, 3: when using test function)
- I / O operating display (16 or 12 points + 1 point of communication error)

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