Toshiba Tosvert VF-A5 - Manual (Page 24)

6.2 Terminal Functions
Table 6.2.1: Main circuit terminal functions for 3.7kW and smaller units
Main circuit terminal functions for 3.7kW and smaller units are as shown below. The internal circuit
Terminal symbol Terminal function
Internal
circuit
diagram
G/E Terminal for external grounding. A
R/L1, S/L2, T/L3 Connect to properly-rated power source. A
U/T1, V/T2, W/T3 Connect to motor (3-phase induction motor). B
PA, PB When built-in braking resistor is insufficient, connect to external braking
resistor (optional).
Change the settings related to dynamic braking resistor protection.
Cl
PC Minus potential terminal for internal DC circuit
A DC power source can be input between this terminal and the PA
terminal (plus potential).
Cl
RO, SO Control circuit power is input via the shorting bars on the terminal block
(RA-1-R0, S/L2-S0). When using a separate power supply for the control
power, remove the shorting bars before connecting the power supply.
D1
(PR1), (PB1) Connected to the built-in braking resistor. When not using the built-in
braking resistor, change the wiring from (PB1) to (PR1)i and then
change the settings of the dynamic braking resistor operation
parameters. C1
(PAD This is an internal connection, so do not remove wires from it or
connect external wires to it. It is connected to the built-in braking
resistor.
Cl
(E) This is for internal connections, so do not remove or connect external
wires. This is wired to the inverter chassis. A
Table 6.2.2: Main circuit terminal functions for 5.5kW and larger units
Main circuit terminal functions for 5.5kW and larger units are as shown below. The internal circuit
diagrams for each terminal are shown on page 21.
Terminal symbol Terminal function
Internal
circuit
diagram
G/E Terminal for external grounding. A
R/L1, S/L2, T/L3 Connect to properly-rated power source. A
U/T1, V/T2, W/T3 Connector to motor (3-phase induction motor). B
PA, PB Connect to the braking resistor (optional) and then set the dynamic
braking resistor operation parameters. C2,C3,C4
PC Minus potential terminal for internal DC main circuit.
A DC power source can be input between this terminal and the PA
terminal (plus potentiaO.
C2,C3,C4
PC, PA Terminals for connecting a DC-link reactor (DCL) (standalone type).
This is short circuited with a shorting bar at shipment. C2,C3,C4
RO, SO Control circuit power is input via the shorting bars on the main circuit
terminal block (R0-R/L1, S0-S/L2). When using a separate power supply
for control power, remove the shorting bars before connecting the
power supply.
On 37kW and larger units, these terminals are not connected to the
main circuit terminals at shipment, so connect a power supply for the
control circuit.
D1, D2
R20, S20 Power supply output terminals (190 to 220V - 50Hz, 190 to 230V -
60Hz) for operation circuits. Only installed on 400V-class 37kW and
larger units (10VA). D2
-
18
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