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Interface Connections
Chassis Input Power Terminals (J9)
Input AC power is applied to terminal block J9 using a pressure screw terminal that accepts a maximum
wire size of 14AWG. The insulation should be stripped 0.35in and the maximum torque applied to the
screws should not exceed 4.4lb.in.
The connector manufacturer recommends the wires not be tinned. A ferrule (Phoenix P/N 32-00-58-0,
purchased from other sources) can be used to prevent fraying. J9-1 (GND) is Earth Ground for safety;
J9-2 (L2) and J9-3 (L1) are the other Hot connections. For Input DC power, L2 is (+) and L1 is (–).
A fault clearing device, such as a fuse or circuit breaker with a maximum 15A rating at the power supply
input is required for safety agency compliance. It should be sized to handle the start-up inrush current of
25A
PK
at 115V
RMS
and 230V
RMS
.
Output Power Connections (+P, –P for Single Output, or J1A/J1B for Dual Outputs)
For single output ConverterPACs, these terminals are two 1/4-20 plated steel studs. The upper stud
is positive with respect to the lower stud. For dual output ConverterPACs, there is a six-pin Molex
connector for each output. J1A (M2) pins 1 and 4 are the +Output, and J1A pins 2 and 5 are the
–Output. Pins 3 and 6 are duplicates of the Remote Sense terminals present on J2A and J2B. Use
appropriate wire size rated to handle the full output current, including short-circuit levels. Avoid large
current loops in output cables; run power and return cables next to one another to minimize inductive
effects. All outputs are isolated and can provide positive or negative outputs.
/–Sense Connections –J2 for Single Output, or J1A/J1B for Dual Outputs
Newer power supplies may have some outputs configured with the Autosense feature that automatically
locally senses the output if remote sense is not used. To check if an output has the Autosense feature,
measure the impedance from the + Out to +Sense and –Out to –Sense pins. If the impedance is 5
Ω
,
then the output has Autosense and does not require local-sense jumpers.
If units do not have Autosense, sense connections must be made. When making sense connections,
keep in mind that although all outputs are open-Sense protected, the +/–Sense terminals MUST
be connected to their respective outputs before the PFC MegaPAC-EL™ and PFC MegaPAC-HPEL™
are powered up. (NEVER disconnect the +Out and –Out load wires while the supply is operating as
disconnecting WILL cause damage to the power supply). Regardless of the output polarity configured,
the +Sense should always connect to the +Power output. The –Sense connects to the –Power output.
Sense connections are not required on booster ConverterPACs™ or if the Local Sense option is specified
(old units). Local Sense mode means that the Remote Sense lines are not connected. Sense pins can be
accessed on J1A/J1B or J2A/J2B on dual output units.
INPUTS
DO NOT
WITHOUT
EARTH
GROUND
L2
115/230V
AC
300V
DC
INPUT CONNECTIONS
J9-1 EARTH GROUND
J9-2 L2-NEUTRAL
J9-3 L1
L1
47 – 500 Hz
OPERATE
47 – 500Hz
300V
DC
115/230V
AC
L2
INPUTS
L1
OPERATE
GROUND
EARTH
WITHOUT
DO NOT
NOTE: SET SCREW MAXIMUM
TORQUE = 4.4IN.LBS
TORQUE = 4.4IN.LBS
NOTE: SET SCREW MAXIMUM
LABEL NO: 94-00046 REV B
LABEL NO: 94-00046 REV B
J10
Figure 3
Input panel connectors
