KW1M Eco
-
POWER METER
44
8.3 Output Specifications
8.3.1 Pulse output (Transistor output)
AKW1111
AKW1110
Number of output point
1 point
Insulation method
Optical coupler
Output type
Open collector
Output capacity
100mA 30V DC
Pulse width
approx. 100ms
ON state voltage drop
1.5V or less
OFF state leakage current
100
μ
A or less
Pulse output unit
0.001/0.01/0.1/1/10/100kWh/
Alarm(AL-P)/ Current alarm(
AL-C)/
Stand-by alarm (AL-S) /
Counter output (Cnt)
(Selectable with setting mode)
0.001/0.01/0.1/1/10/100kWh/
Alarm(AL-P)/ Current alarm(
AL-C)
(Selectable with setting mode)
* We recommend the setting of minimum unit for pulse output for measurement shown as below.
Output pulse: 4 pulse or less per 1sec.
How to calculate
(Unit for pulse output: PL-P)
>
(Max. measurement power [kW]
)/
(3600[s]
×
4 [pulse/s])
Note
(1) Improper unit setting may cause miss counting.
(2) If the OFF time is too short, there is a possibility of counting errors.
8.4 Communication Specifications
Interface
Conforming to RS485
Protocol
MEWTOCOL/MODBUS(RTU) (selectable with setting mode)
Isolation status
Isolated with the internal circuit
Number of connected units
99 (max.)
*2 *3
Transmission distance
1200m (max.)
*1
Transmission speed
38400/19200/9600/4800/2400bps (selectable with setting mode)
Data length 8bit/7bit (selectable with setting mode)
*4
Parity
Not available / Odd number / Even number (selectable with setting mode)
Transmission
Format
Stop bit
1bit (fixed)
Communication method
Half-duplex
Synchronous system
Synchronous communication method
Ending resistance
approx. 120
Ω
(built-in)
*1 Please check with the actual devices when some commercial devices with RS485 interface are connected. The
number of connected devices, transmission distance, and transmission speed may be different according to using
transmission line.
*2 For RS485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co.,Ltd.).
*3 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.
*4 With MODBUS (RTU) protocol, it works only with 8bit.
Содержание AKW1110
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Страница 54: ...KW1M Eco POWER METER 46 Chapter 9 Mounting 9 1 Dimensions 9 1 1 AKW1111 Main unit 9 1 2 AKW1110 Main unit ...
Страница 55: ...KW1M Eco POWER METER 47 Panel cutout 9 1 3 Dedicated CT unit mm For 5A 50A AKW4801C tolerance 1 0 ...
Страница 56: ...KW1M Eco POWER METER 48 For 100A AKW4802C For 250A AKW4803C ...
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