Hardware manual

MVS-8100L Hardware Description 2
24 Cognex MVS-8100L Hardware Manual
Electrical Specifications
This section describes the electrical specifications for the MVS-8100L including power
requirements and signal descriptions. See Figure 13 on page 27 for the location of the
components described in this section.
Power Requirements
Power for +5 VDC and –12 VDC is provided through the PCI bus. Power for +12 VDC is
provided through the PCI bus or through a direct connection to the power supply of the
host PC, depending on the setting of jumper JP1. Table 5 lists the power requirements
for the MVS-8100L frame grabber board.
Power Selector Jumper JP1
Power for +12 VDC can be drawn through the PCI bus or from the power supply of the
host PC, using an external power cable. The position of jumper JP1 determines the
source of camera power as described in Installing the MVS-8100L on page 9.
Select the appropriate external power cable for your MVS-8100L as described in
Selecting an External Power Cable on page 14.
Camera Fuses
Attached cameras draw from the available +12 V power of the MVS-8100L. Each
camera can draw up to 750 mA of current; each camera channel has a PolySwitch
resettable fuse at 1 A.
Voltage Tolerance Requirements
Max
Ripple
+5 VDC ± 5% 1.5 A 100 mV
+12 VDC
(from PCI bus)
± 10% 200 mA, board only. Limit total
power draw for the board and
all cameras to 950 mA.
100 mV
+12 VDC
(from PC’s power
supply)
200 mA, board only. Limit total
power draw for the board and
all cameras to 3.5 A.
–12 VDC ± 10% 200 mA 100 mV
Table 5. MVS-8100L power requirements