Eurotherm Drives 590 DRV Digital, Product Manual

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Chapter 3 Installation and Wiring
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3
590 DRV Digital DC Drive Product Manual
Connect the main AC power supply to terminals L1, L2, and L3 (see Figure 3.2) through the correctly
sized branch circuit protection and an AC line reactor or dedicated drive isolation transformer.
Eurotherm Drives stocks a series of reactors designed to connect to the 590 DRV Digital AC supply
terminals. The part numbers for the reactors are:
Reactor Rating (RMS) Reactor Part No.
35 amp CO055192
70 amp CO055193
110 amp CO055253
180 amp CO055255*
* Requires interposing terminals between the DRV supply and the reactor.
Armature Connections
Connect the motor armature to terminals A+ and A– (Figure 3.3). To comply with national and local
electrical codes, external DC overload protection must be provided.
If you are using dynamic braking to stop the motor, connect the negative armature lead through a
suitably rated dynamic brake resistor to terminal DB+.
Motor Field Connections
If you are supplying the drive field regulator internally or from the main supply, connect the motor
field (–) to terminal F– and field (+) to terminal F+ (Figure 3.3).
If the drive's field regulator requires an external field supply (for example when a 240 volt field is
required on a 240 volt armature motor), connect the supply wires to terminals FL1 for phase L1 and
FL2 for L2.
Caution
An "out-of-phase" external supply can blow fuses and cause faulty operation. The AC
field supply is normally fed internally from L1 and L2. Some motors require field
voltages greater than the mains supply at L1, L2, and L3. This external field supply must be
"in phase" with the main supply. The supply connection to terminal FL1 must be in phase
with the supply on terminal L1 and FL2 must be in phase with the supply on L2.
Depending on the drive's field regulator rating, reconnect the field supply jumpers on the controller
power board as described below:
1. FOR MODELS RATED THROUGH 150 HP or 250 A (units rated for a 10 A field, maximum):
• Verify that power is disconnected, then move the RED wire from internal terminal F16 to
internal terminal F19 and move the YELLOW wire from F8 to F18 (see Figure 3.4).
• Externally protect the supply with suitable branch circuit protection fuses rated for the
supply voltage. The external fuse rating should not exceed 10 A.
• When using an external field supply for drives fitted with three-board power supplies, refer
to Appendix L for the field controller jumper connections.
Isolation TX
Line Reactors
Ext. Fld. Supply
for 250 A or Less
Units
Move YELLOW
Wire
Move RED Wire
B
Fuse @ no more
than 10 A.
▼
▼
3 Board Power
Supply?
See Appendix F
Connect Field
Ext. Fld. Supply
C
D
Connect Armature
Install Overload
Figure 3.4 - External Field Supply Jumper
Connections for Units Rated through 250A