MVS-8100 Hardware Description
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Cognex MVS-8100M Hardware Manual
Electrical Specifications
This section describes the electrical specifications of the 8100 including power
requirements, signal descriptions, and a summary of how jumpers are used. Refer to
Figure 14 on page 33 for the location of the ports, headers, and LEDs described in this
section.
Power Requirements
Caution
Failure to properly attach and configure the external power cable to
your 8100 (as described in Installing the MVS-8100 on page 11) may
result in damage to your frame grabber, motherboard, or both.
Power to the board is provided through the PCI bus for +5 VDC and –12 VDC. The
+12 VDC power is provided through a separate connection to the PC’s power supply
through jack J2, as shown in Table 11.
Note
The 200 mA draw for +12 VDC shown in Table 11 is the power
required for the 8100 board itself. Addi12 VDC power is
required for each attached camera and light module. See
Fuses
for
a discussion of the additional power requirements.
Fuses
Attached cameras and light modules draw from the 8100’s ava12 V power. Each
camera can draw up to 500 mA of current and is fused for fault currents at 1 A. Each
light module can draw up to 250 mA of current and is fused for fault currents at 500 mA.
All cameras and lights are collectively fused at 3.5 A by the fuse at position F9. That is,
if the sum of the currents of all cameras and light modules exceeds 3.5 A, fuse F9 will
blow. Note that the sum of the maximum allowable currents for each individual camera
and light module totals to 3 A.
The fuse at board position F9, Cognex P/N 121-0036, is Littlefuse part number 47303.5,
Pico Fuse 3.5 A Slow Blow.
Voltage
Tolerance
Requirements
Max Ripple
+5 VDC
± 5%
1.5 A
100 mV
+12 VDC
± 10%
200 mA (See note)
100 mV
–12 VDC
± 10%
200 mA
100 mV
Table 11. 8100 power requirements
