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OPTIONS
Name (type)
Personal
RS485 communication is optional on the CUB CM.
An optional card must be mounted on this control board.
computer
interface card
Three types of option card: OPC-C11S-RSA, OPC-C11S-RSB, and
OPC-C11S-RSC, are available depending on the applicable inverter.
The following operations are possible from personal computers,
PLCs and similar host controllers through RS485 communication.
• Frequency setting, forward rotation, backward rotation, stop,
free-run, alarm cancel, and other running operations
• Monitoring output frequency, output amperage, operating
conditions, alarm content, etc.
• Setting function codes
Up to 31 inverters can be connected to one line and controlled by
one host controller.
Easy host controller program development for transmission frames
fixed at 16 bytes of character data.
Refer to the dimensions in RS Option dimension chart on page 16.
Wiring equipment
Power Nominal
supply
applied
Inverter type
voltage
motor
(kW)
Single
0.2
CUB CM20
phase
0.4
CUB CM40
200V
0.75
CUB CM75
1.5
CUB CM150
2.2
CUB CM220
Notes:
For molded-case circuit breakers (MCCB) and earth leakage circuit breakers (ELCB), the required frame type and series depend on the facility
transformer capacity and other factors. When selecting such breakers, refer to the relevant technical data.
Also select the rated sensitive current of ELCB utilizing the technical data.
The recommended wire sizes are based on the condition that the temperature inside the panel does not exceed 50°C.
The above wires are 600V IV insulated and the wires in ( ) are 600V cross-linked polyethylene.
The power source impedance obtained without the reactor is equivalent to 0.1% when converted into inverter capacity. The current imbalance
caused by voltage imbalance is assumed to be 10%.
If ambient temperature or power voltage differs from the above table, requirements will differ.
17
Description
MCCB or ELCB
Magnetic contactor (MC)
Rated current (A)
Input circuit
Without
Without
With DCR
With DCR
reactor
reactor
6
6
K212A
10
10
16
K216A
16
20
20
32
K230A
Serial transmission protocol
Items
Specifications
Physical level
EIA RS-485 standard (Two-phase)
No. of linked inverters
1 host, 31 inverters (station addresses:
1 to 31)
Transmission rate
19200, 9600, 4800, 2400, 1200 BPS
Synchronisation
Start-stop system
Transmission system
Half duplex
Transmission protocol
Polling/selecting, broadcast
Character set
ASCII 7 bit
Character length
8 bit, 7 bit selection possible
Electrical separation
Maximum 500m
Stop bit length
1 bit, 2 bit selection possible
Frame length
Standard frame: 16 byte fixed; compressed
frame: 8 or 12 byte
Parity
None, even, odd selection possible
Error check system
Checksum, parity, framing error
Recommended wire size (mm
Input circuit
Output circuit
Output
(R, S, T)
(U, V, W)
circuit
Without
With DCR
reactor
1.5
1.5
2.5
2.5
2.5
2.5
2
)
DCR
Control
circuit
wiring
(P1,P(+))
1.5
1.5
2.5
2.5
0.75
2.5
2.5
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