Regen Drive Commissioning; Sequence; Motoring Drive Active - Emerson SP1201 Installation Manual

Safety Product
Introduction
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7. DC bus discharges to 410Vdc at which point drive the healthy relay
becomes in-active. The Regen drives enable is removed. The
motoring drives enable signal from Regen drive becomes in-active.
8. Regen drive main contactor, K2 is opened via the drive healthy relay,
control terminals 41, 42.
9. Aux.2 opens informing the drive that the Regen drives main
contactor K2 is open. K3 charging contactor is closed and Aux.1
opens.
Power applied and power removed 400V system
Single Regen: Multiple Motoring - external charging resistor
1 2 3 4
1. K1 (main supply contactor / isolator) is closed with charging circuit
active (K3 closed).
2. DC bus charges through the external charging resistors (charging
circuit).
3. If the DC Bus > 430Vdc then K2 Regen drive main contactor and
Aux.2 are closed via Regen drives relay, control terminals 41, 42.
4. K3 charging contactor is opened via K2 (Regen drive main
contactor) and Aux.1 closes. The Regen drive enable, S1 can now
be applied.
5. The Regen drive and motoring drives can be enabled (enable signal
from Regen drive to motoring drives active, control terminal 24).
6. K1 (main supply contactor / isolator) is opened removing power from
the regen system.
7. DC bus discharges to 410Vdc at which point drive the healthy relay
becomes in-active. The Regen drives enable is removed. The
motoring drives enable signal from Regen drive becomes in-active.
8. Regen drive main contactor, K2 is opened via the drive healthy relay,
control terminals 41, 42. Aux.2 opens informing the drive that the
Regen drives main contactor K2 is open.
9. K3 charging contactor is closed and Aux.1 opens
Power applied and power removed 400V system
Regen brake resistor replacement
1 2 3 4
1. K1 (main supply contactor / isolator) is closed.
2. DC bus charges through motoring drives L1, L2, L3 Vac inputs.
3. If the DC Bus > 430Vdc then K2 Regen drive main contactor and
Aux.2 are closed via Regen drives relay, control terminals 41, 42.
4. Regen drive enable, S1 can now be applied.
5. The Regen drive and motoring drives can be enabled (enable signal
from Regen drive to motoring drives active, control terminal 24).
Unidrive SP Regen Installation Guide
Issue Number: 2
System Mechanical
design installation
K1
K3
Vdc
Drive Healthy
K2
Aux.2
Aux.1
Aux.3
S1
5 6 7 8 9
K1
Vdc
Drive Healthy
K2
Aux.2
Aux.1
S1
5 6 7 8
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installation started
6. K1 (main supply contactor / isolator) is opened removing power from
the regen system.
7. DC bus discharges to 410Vdc at which point drive the healthy relay
becomes in-active. The Regen drives enable is removed. The
motoring drives enable signal from Regen drive becomes in-active.
8. Regen drive main contactor, K2 is opened via the drive healthy relay,
control terminals 41, 42. Aux.2 opens informing the drive that the
Regen drives main contactor K2 is open.
N
NOTE
When the Regen drive has powered-up and the DC bus voltage has
exceeded 430Vdc, Pr 3.07 changes from 0 to 1 activating the drives
relay which in turn closes the Regen drive main contactor. If either the
DC bus voltage falls below the contactor open voltage (410Vdc) or the
system is synchronised and the AC voltage falls below contactor open
voltage (150Vac), Pr 3.07 will change from a 1 to 0 opening the Regen
drive main contactor.
Synchronisation:
• Apply test pulses to line to determine magnitude and phase.
• Attempt to synchronise to the line.
• If synchronisation is successful then enable the DC bus voltage
controller.
DC bus voltage controller active:
• DC bus voltage rises to reference level.
• Motoring drive enabled by digital output from Regen drive.

Motoring drive active:

• The motor may now be energised and rotated.
• Power flows to and from the line as necessary via the Regen drive.
• DC bus voltage remains stable.
·
Whilst running if:
• The line voltage dips too low
The Regen drive synchronises to the Vac supply and therefore
knows the supply voltage (Pr 5.02)
• OR the DC bus voltage goes out of regulation
DC bus drops below the contactor open voltage level (410 Vdc)
• OR there is any trip on the Regen drive
Drive healthy no longer active. Regen and motoring drive(s)
enable removed
• OR the supply contactor is de-energised
Aux.2 connected to control terminal 25 of Regen drive
• OR the Regen drive is disabled
• OR the MCB trips
Switching frequency filter or external charging resistor
Then:
• the Regen drive will inhibit
• the motoring drive will be disabled by the Regen drive
• the Regen drive main contactor will be opened
7.2.1

Sequence

The motoring drive must only be enabled when the Regen drive is
enabled, healthy, and synchronised to the AC supply. This will prevent
any damage to the regen drive start-up circuit and prevent OV trips.
7.3

Regen drive commissioning

• Ensure power and control connections are made as specified in this
Installation Guide.
• Ensure the Regen and motoring drives are not enabled.
• Switch on the AC supply.
• Both the Regen and motoring drives should now power up through
the relevant start-up circuits in standard open loop mode.
• On the Regen drive, configure the drive type Pr 11.31 (Pr 0.48) to
REGEN.
• The main contactors should now close; the relevant start-up circuit is
disabled at this point.
• On the Regen drive, set up the switching frequency and DC bus set
point voltage to the required values in either Menu 0 or Menu 3, refer
to section 7.1.2 DC bus voltage set point . Save the parameters.
Technical Component
Parameters
data sizing
Diagnostics
87