TOYODenki VFDB2009 Series, Руководство по эксплуатации

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Notes at the time of wiring
Lay the main circuit wires and the control signal wires apart from each other.
Wiring of an inverter should follow the instructions manual of inverter each model.
Inside of a figure 3 of a part of the connection example wires for the twist. Please lay out the
equipment to shorten as much as possible and wire for wiring. If the twist line is not used, the surge
voltage is by the twice or more. there is a possibility of damaging the unit.
Please connect input power source (P,N) of DB unit from the middle D.C. power (+2,-) of the Inverter
unit by twist cable. Refer to Table 3-1 for the size of the use cable and number of time to twist .
Change the connector on DB unit according to the voltage system of an inverter. Refer to "5.2.1
Change of power supply voltage" for details.
Wire the DB unit for the interlock relay use doing that operates by the INV RUN signal contact
(52MAX) of the inverter so that the DB unit should not work while the inverter is stopping and wire
use twist cable. The interlock relay must use the lopower relay.
Select braking resistor (DBR) so that required regeneration power is obtained, and take protection
coordination in thermal relay (OCRY). It becomes a cause of a fire when cooperation cannot be taken.
About selection of braking resistor (DBR) and thermal relay (OCRY), refer to "6.2 Selection of braking
resistor" and "6.3 Selection of thermal relay." Thermal relay (OCRY) should use what operates with
direct-current current.
Please shorten wiring to braking resistor (DBR) and thermal relay (OCRY) as much as possible, and
twist it, and the wiring near braking resistor (DBR) should perform heat-resistant processing.
Since braking resistor (DBR) generates heat (200 degrees or more), it is installed in a place with
sufficient ventilation, and does not put combustibles on the surroundings.
By operation of thermal relay (OCRY), the trip of circuit braker (MCCB) or electromagnetic contactor
(MC) by on the inverter input is carried out.
Protection contact(86A) of the DB unit operates by protection of DBunit. Please connect the
protection contact (86A) of the DB unit to the circuit of inverter operation instructions in series as an
interlock of inverter operation.
Main circuit wiring of an inverter and DB unit should set to a maximum of 10m, and please wire as
short as possible.
Please be sure to connect the ground of a DB unit.
When you use DB unit by a parallel operation, please be sure to connect master instructions signal
(DB-IN) and a slave input signal (DB-ON).