AcroPack Series ACPS3310
CompactPCI-Serial Carrier Board
- 9 -
Carrier Fuses
CAUTION: Acromag has used pins labeled as reserved in the Mini-PCIe specification for additional power
connections. If you are installing a Mini-PCIe card from another manufacturer in slot A remove fuses F1(+12V),
F2(+5V) and F3 (-12V). When installing a Mini-PCIe card in from another manufacturer in slot B remove fuses
F7(+12V), F8(+5V) and F9 (-12V). Fuse locations are shown in Figure 1.
Other fuses present on the board i1.5V Fuses F6 (slot A) and F12 (slot
B). Also present on the board are +3.3V Fuses F4 (slot A) and F10 (slot B).
These fuses are not user replaceable. Return the carrier board to Acromag to
replace these fuses. Both Mini-PCIe cards from other manufacturers and the
AcroPack modules can use +1.5V and +3.3V power.
Fuses not present on the board i3.3V Aux Fuses F5 (slot A), F11 (slot
B). Some standard Mini PCIe cards may r3.3V Aux to power the
module. For a site using such a module the +3.3V fuse will need to be
removed and the +3.3 Aux fuse will need to be installed, along with a
regulator to c5V standby from the CPCI-S backplane to +3.3V Aux.
Return the carrier board to Acromag to remove and install these parts.
Isolation Considerations
WARNING:
This AcroPack carrier is designed to provide isolation between the
AcroPack Field I/O signals and the host. The AcroPack module must also be
an isolated AcroPack module to maintain the isolation between the logic and
field I/O signals. Unless isolation is provided on the AcroPack module itself,
the field I/O connections are not isolated from the PCIe bus.
When this carrier is used with isolated AcroPack modules, both AcroPacks in
slots A and B should be isolated. Non-isolated AcroPacks sharing the same
Connector will compromise the isolation integrity of the other AcroPack.
Isolated Power
The use of an optional isolated DC/DC Converter is required for use with a few
of Acromag’s isolated AcroPack modules. See Figure 1 for carrier board
location allocated for the isolated DC/DC converter corresponding to each
slot.
The power supplies of one AcroPack site must be isolated from the power
supplies of other AcroPack sites. The two separate isolated DC/DC converters
make this possible. The DC/DC converted should only be populated on the
carrier for AcroPacks needing the isolated power. Each isolated AcroPack
module will list the requirement of the external DC/DC converter if needed.
The isolated DC/DC converter provide dual +12V and -12V power to the
AcroPack module on field I/O pins 49 and 50 as listed in the Table below.
Table 1 Carrier Isolated Power
Supply Voltage
Current (Min)
Field I/O Pin
+12V
+/- 8% (max)
0.16 A
50
1