User’s Manual
15
If connecting to a capacitor bank, it should be fully discharged when this
connection is made.
Since a battery bank cannot be fully discharged without damaging the
batteries, a disconnect or contactor should be placed between the
Storage Bus terminals of the M3528 and the battery bank terminals.
Make sure the polarity is correct for the connection, failure to do so can
cause severe damage to the system.
CAUTION!
T
HE
M3528
SHOULD BE POWERED ON AND THERE SHOULD BE LESS THAN
50VDC
DIFFERENCE BETWEEN THE VOLTAGE AT THE
S
TORAGE
B
US TERMINALS OF THE
M3528
AND THE VOLTAGE AT THE BATTERY BANK WHEN THE DISCONNECT OR
CONTACTOR IS CLOSED
.
I
F THE
M3528
OUTPUT IS GREATER THAN
50VDC
HIGHER THAN THE BATTERY
VOLTAGE
,
CONNECT THE BATTERY BANK DISCONNECT BEFORE TURNING THE
M3528
ON AND ENABLING
.
F
AILURE TO HEED THIS WARNING COULD RESULT IN DAMAGE TO THE SYSTEM
!
DANGER!
F
OR SYSTEMS THAT HAVE
DC
STORAGE
,
ALWAYS MEASURE
DC
VOLTAGES
,
AND
FOLLOW PROPER PRECAUTIONS TO ENSURE THEY ARE AT SAFE LEVELS BEFORE
MAKING CONNECTIONS
.
3.4.1.4.
G
ROUNDING
R
EQUIREMENTS
All units come equipped with a 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.
3.4.2.
C
ONTROL
I
NTERFACE AND
I/O
W
IRING
Control wiring allows for remote enabling and monitoring of the M3528. Inputs
can be a dry contact using an internally generated, isolated supply, or an external
24VDC signal.
Table 3-3: User I/O Connections With 3528C2 or 3528C3 Boards
T
ERMINAL
F
UNCTION
E
LECTRICAL
S
PECIFICATIONS
W
IRE
AWG
T
ORQUE
TB3-1
24VDC+
24 VDC,
50 mA
16
2.1 lb-in
TB3-2
Enable Input
TB3-3
24VDC+
TB3-4
Equalize Input
TB3-5
Input Common
TB4-1
Output Common
350V, 120mA
TB4-2
Charging Output
TB4-3
Ready Output