HP Anab EQ5 - Manual (Page 19)

EQ5 AC Drive Operations Manual
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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 13
b. When the RCD (Residual-current Protective Device) is installed (30HP/CT, 40HP/VT or less), the
terminal R0
and T0 should be connected to the output side of the RCD. If they are connected to the input side,
the RCD will malfunction because the power supply of the inverter is three phase and the
R0 and T0 input is single phase. If it is required to connect terminals R0 and T0 are to the input side
of the RCD, an isolation transformer is required as shown on the Fig. 2-3-2.
4. Connecting a DC link choke to terminals (P1 and P (+))
a. Before connecting a DC link choke to these terminals, remove the
factory-installed jumper. (Fig. 2-3-3)
b. If a DC link choke is not used, do not remove the jumper.
Note: For inverters of 100HP or more, the DC link choke is provided
as separate standard component and should always be
connected. For inverters less than 100 HP, the DC link choke
is not provided and is optional.
P(+) P1
X
DC Link Choke
Inverter
Fig. 2-3-3 Remove Jumper
4. Connecting an external braking-resistor to terminals (P (+) and DB) (10HP/CT, 15HP/VT or less)
(Fig. 2-3-4). For inverters 10HP/CT, 15HP/VT or less, a built-in braking resistor is connected to
terminals P (+) and DB. If this braking resistor does not provide sufficient thermal capacity (e.g.
high operating duty cycle or high inertia loads), an optional external braking resistor must be
installed to improve braking performance.
a. Remove the internal braking resistor from
terminals P(+) and DB and Insulate the
terminals with adhesive insulation tape, etc.
b. Connect terminals P(+) and DB of the external
braking resistor to terminals P(+) and DB of the
inverter.
c. The wiring (cables twisted or otherwise) should
not exceed 16ft (5m).
6. DC link circuit terminals (P (+) and N (-)) (Fig.2-3-5).
The EQ5 inverter of 15HP/CT, 20HP/VT or more
does not contain a drive circuit for the braking
resistor. To improve braking performance, an optional
external braking unit and external braking resistor
must be installed.
Fig. 2-3-4 Connection (10HP/CT,
15HP/VT or less)
a. Connect terminals P and N of the braking unit to terminals P(+) and N(-) of the inverter.
The wiring (cables twisted or otherwise) should not exceed 16ft(5m).
b. Connect terminals P and DB of the braking resistor to terminals P and DB of the braking
unit. The wiring (cables twisted or otherwise) should not exceed 33ft (10m).
c. Connect terminals P and DB of the braking
resistor to terminals P and DB of the
braking unit. The wiring (cables twisted or
otherwise) should not exceed 33ft (10m).