M3575T
16
Ensure that the polarity of the connection is correct. Incorrect polarity
will effectively short the DC bus of the drive, and can cause severe
damage to the drive, load resistor, and the braking transistor.
The proper terminals to attach the braking transistor are marked +
and - on Figure 3-2.
The terminals marked BR+ and BR- are intended for the internal
braking transistor. If the Bonitron external braking transistor is
hooked to the terminals, the braking transistor will not operate
properly. In some cases, it may cause drive failure.
The terminals marked X and Y are intended for connection of a DC
link choke. If the Bonitron braking transistor is connected to the
terminals marked X and Y in Figure 3-2, switching resonances
caused by the DC link choke will destroy the braking transistor. If the
Bonitron braking transistor is connected between X and Y, the drive
will not operate.
If the braking transistor is connected to the terminals marked A and
B in Figure 3-2, switching resonances caused by the lack of filter
capacitance during precharge will destroy the braking transistor.
3.5.1.2.
R
ESISTOR
C
ONNECTION
The polarity of the resistor connections is not critical; however, it is critical
that the resistor be connected to the proper terminals. Improper hookup
can lead to the resistor being connected directly across the DC bus, which
will cause severe overheating and drive stress.
Minimum load resistance requirements listed in Table 6-1: Module
Ratings in Section 6 of this manual MUST be followed when selecting a
resistive load for use with the M3575T unit.
3.5.1.3.
G
ROUNDING
R
EQUIREMENTS
All units come equipped with either a ground terminal or ground stud that
is connected to the module chassis. Ground the chassis in accordance
with local codes. Typically, the wire gauge will be the same as is used to
ground the attached drive.
3.5.2.
C
ONTROL
I
NTERFACE
W
IRING
Table 3-2: Control Interface Wiring Specifications
T
ERMINAL
F
UNCTION
E
LECTRICAL
S
PECIFICATIONS
M
IN
W
IRE
AWG
M
AX
W
IRE
AWG
T
ORQUE
TS 5-6
Status
Contacts
1.0 A at 24 VDC
0.5 A at 120 VAC
16 AWG
12 AWG
0.4-0.6 Nm
3.5-5.3 lb-in
Summary of Contents for M3575T
Page 6: ...M3575T 6 This page is intentionally left blank ...
Page 17: ...User s Manual 17 3 6 TYPICAL CONFIGURATIONS Figure 3 2 Typical Power Interconnection Diagram ...
Page 31: ...User s Manual 31 Figure 6 3 B5 Chassis Dimensional Outline Drawing ...
Page 34: ...M3575T 34 6 8 BLOCK DIAGRAM Figure 6 7 Block Diagram ...
Page 38: ...M3575T 38 Figure 7 1 Typical Status Contact Wiring with Input Contactor ...
Page 39: ...User s Manual 39 Figure 7 2 Typical Status Contact Wiring with Drive Interlock Control ...
Page 41: ...User s Manual 41 NOTES ...
Page 42: ...M3575T 42 This page is intentionally left blank ...
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