Banner PresencePLUS Interface Modules - Manual (Page 3)

page 3
SCM Strobe Control Module
Banner Engineering Corp. • Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 763.544.3164
Outputs Light 1 and Light 2 are independent outputs for controlling Banner
LED strobed lights. Lights are pre-wired with a 2 m (6') cable
terminated with a 9-pin D-sub connector, which plugs directly into
the controller. The connector pin configuration is as follows:
Pins 4 and 5 = +24V dc
Pins 1 and 6 = dc common
Cable length from the SCM to an LED light is limited to a maximum of 4.8 m (16'). See
Accessories on page 4 for available extension cables.
Note: Be certain that an LED light source plugged into the SCM module is the
strobed type and NOT the continuous type. All strobed type lights have a model
number which ends with the letter “S” (indicating Strobed).
If powering two lights from one strobe output, be certain that the combined peak
current demand of the two light does not exceed 9A.
Settings
Trigger Response Select the desired response from each trigger signal. Choose “Rise”
for strobe trigger on transition from low to high voltage, or “Fall”
for trigger on a high to low transition.
Pulse Width P/W1 and P/W2 are 8-bit binary output pulse width selector
switches for channels 1 & 2. Each bit is weighted, as follows:
Switch Value (µs)
1 10
2 15
3 25
4 45
5 85
6 165
7 325
8 645
The programmed pulse width is equal to the total of the values
selected. Move each switch to the right to select its value.
Note: Moving all switches to the left results in a 5µs pulse width.
Tip: Use the following formula to calculate image blur of an
inspection system, measured in pixels:
Blur = Ts x V x FOV
Where: Ts = Strobe pulse width (seconds)
V = Speed of targets moving past the inspection point
(length/sec)
FOV = Field of view of the inspection system
(pixels/length)
(Rise/Fall)
OFF
P/W2
ON
645
325
165
85
45
25
15
10
Figure 2. Switch bank