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Signal Ground (J10-10)
Signal Ground (see Figure 4 and Connector Pin Identification) is an isolated ground reference for all J10
interfacing signals and can be used for ConverterPAC™ output status signals such as Power Good. This
is not the same as Earth Ground on input power connector J9.
Enable/Disable (J10-1 to J10-8)
The Enable / Disable control pins allow ConverterPAC outputs to be set either on or off. J10-1 through
J10-8 are the control pins for output positions 1 – 8, respectively (see Figure 5 and Connector Pin
Identification above). For DualQPACs™, both outputs are set on or off by the same control pin. In
parallel arrays, only the driver ConverterPAC need be controlled. The Enable / Disable pins must be
pulled low to less than 0.7V with respect to Signal Ground to disable the outputs. They will sink 10mA
maximum. These pins should be open circuited or allowed to exceed 4.5V when enabled. Do not
apply more than 6V to these inputs at any time. If driven from an electromechanical switch or relay, a
capacitor should be connected to eliminate the effects of switch bounce.
Figure 4
Interface connector
J10-9
J10-10
J10-11
J10-12
VCC +5V, 0.3A
SIGNAL GROUND
AC POWER OK
GEN SHUTDOWN
J10 INTERFACE
J10-1
J10-2
J10-3
J10-4
J10-5
J10-6
J10-7
J10-8
E/D-1
E/D-2
E/D-3
E/D-4
E/D-5
E/D-6
E/D-7
E/D-8
12
11
10
9
8
7
6
5
4
3
2
1
J10
Figure 5
Enable / disable and
general shutdown
PFC MegaPAC-EL™
1
10
12
Signal Ground
General Shutdown
Enable/Disable Output 1
J10
1
0
TTL "1" (OFF)
TTL "0" (ON)
9
VCC
Using external transistors to
drive enable/diable logic