Communication Specifications; Dedicated Current Transformer Specifications - Panasonic KW4M User Manual

8-4 Communication Specifications

Interface
Protocol
Isolation status
Number of connected units
Transmission distance
Transmission speed
Data length
Transmission
Parity
Format
Stop bit
Communication method
Synchronous system
Ending resistance
◆Factory settings
Transmission speed (Baud rate)
19200 bps
※1 For RS-485 converter on the computer side, we recommend SI-35 (from LINE EYE Co.,Ltd.).
※2 When using SI-35, SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99
Eco-POWER METER can be connected.
In case using this system with the other devices, up to 31 Eco-POWER METER can be connected.
※3 Change the sliding switch of main unit as a terminal station. (Factory setting; General side)

8-5 Dedicated Current Transformer Specifications

Model No.
Primary side rated current
Rated secondary side current
Winding (Turn)
Ratio error
Hole Dia (mm)
Breakdown voltage (initial)
Insulation resistance (initial) Min. 100MΩ (at DC500V) （Between through hole and output lead wire）
Functional
Vibration
resistance
Destructive
Functional
Shock
resistance
Destructive
Output protection level
Permissible
clamping frequency
Ambient temperature
Storage temperature
Ambient humidity
Weight
Note) Dedicated current transformers (CT), AKW4801, 4802,4803,4804, are dedicated for low
voltage under 440V. They can not be used for high voltage circuit. In case measuring
high voltage circuit, make a 2-step construction by combination of a commercial CT of
secondary side current 5A for high voltage and the dedicated CT for 5A (AKW4801).
36
Conforming to RS-485
MEWTOCOL/MODBUS (RTU) (different model)
Isolated with the internal circuit
1 2
※ ※
99 (max.)
1200m
38400/19200/9600/4800/2400bps (selectable with setting mode)
8bit/7bit (selectable with setting mode)
7bit (fixed)
Not available/Odd number/Even number
(selectable with setting mode)
1bit（fixed）
Half-duplex
Synchronous communication method
Approx. 120Ω（built-in）
Data length
8 bit
AKW4801
5A / 50A
1.67mA / 16.7mA
3000
φ10
AC1000V/1min
（Between through hole
and output lead wire）
10～55Hz (1 cycle/ minute) single amplitude of 0.375mm
10～55Hz (1 cycle/ minute) single amplitude of 0.15mm
2
Min. 98m/s (4 times on X, Y and Z axes)
2
Min. 294m/ s (5 times on X, Y and Z axes)
±7.5V with clamp element
-10 to +50℃ (without frost and non-condensing)
-20 to +60℃ (without frost and non-condensing)
35～80%RH （at 20℃ non-condensing）
Approx. 50g
(Trunk cable included)
3
※
Parity
Odd number 1 bit (fixed)
AKW4802
100A
33.3mA
3000
±2.0% F.S.
φ16
AC2000V/1min
（Between through hole
and output lead wire）
(1 hrs. on X, Y and Z axes)
(10 min. on X, Y and Z axes)
Approx. 100 times
Approx. 80g
(Trunk cable included)
(MEWTOCOL type)
(MODBUS type)
Stop bit Station no.
1
AKW4803 AKW4804
250A 400A
125mA 200mA
2000 2000
φ24 φ36
±3.0V with clamp element
Approx. 200g Approx. 300g
(without trunk cable) (without trunk cable)