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3 Cognex MVS-8100C Hardware

Cognex MVS-8100C Hardware Manual 37

Electrical Specifications

This section describes the electrical specifications of the MVS-8100C including power

requirements, signal descriptions, and a summary of how jumpers are used. Refer to

Figure 15 on page 35 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 cord to

your MVS-8100C (as described in Installing the MVS-8100C on

page 9) may result in damage to your frame grabber, motherboard,

or both. Refer to the Installation manual for details.

Power to the board is provided through the PCI bus for +5 VDC and –12 VDC. The

+12 VDC power is provided through a connection to the PC’s power supply.

Table 12. MVS-8100C power requirements

Note The 200 mA draw for +12 VDC shown in Table 12 is the power

required for the MVS-8100C board itself. Additional +12 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 MVS-8100C’s available +12 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.

Voltage Tolerance Requirements 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

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Pulnix TM-7EX Manuel Page 37