OSS OSS-PCIE-4UV-5-1, User Manual

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One Stop Systems
OSS-PCIe4-4UV-5 75
Adjustment knob:

Primary function: Adjusting the speed of the fan. 100%= max speed; 0%= fan is stopped.

Turn the knob counter-clockwise, reduces the fan speed. Turn the knob clockwise, increases the fan speed.
Control Function Selector Switch:

Correct settings to operate the PWM Controller: 1(VO)=OFF , 2(TH)=OFF, 3(IA)=ON, 4(EA)=OFF
The PWM Controller in this setup can be operated in internal adjustment function (IA) only. This is why the IA is ON and the others are OFF.
In the IA mode the adjustment shows the percentage duty cycle of the PWM (0%-to-100%). The 30-50 scale is only for TH and EA modes and is
not being utilized in this configuration.
VO: Voltage control TH: Thermistor control IA: Internal adjustment control EA: External adjustment control
PWM output voltage VOH selector switch:

The default setting for VOH is 5v. The 5V level needs to be set for the fan to have the correct maximum voltage.
Power LED Green:

When PWM Controller is ON, the LED will be illuminated as solid GREEN.
11.1 Specifications
Item Specifications Remarks
Model no. 9PC8666X-S001
Size [mm] 86 (H) × 66 (W) × 38 (D)
Rated voltage [VDC] 12, 24, and 48
Power consumption [W] 0.2 W
Operating voltage range [VDC] 7 to 60 VDC
PWM signal
output
High-level
voltage
(VOH)
3.3 V or 5 V
Low-level
voltage (VOL)
0.4 V or lower
PWM frequency
Operating temperature [
℃
] -20 to +70°C, Non-condensing
Storage temperature range -30 to 70°C Non-condensing
Humidity (Operating and Storage) 20 to 85% RH Non-condensing
25 kHz
Output PWM signal VOH (high level voltage): 3.3 or 5 VDC (selectable). Frequency: 25
kHz
Material Case: Plastics
Mass Approx 110 g
Insulation resistance 10 MΩ or higher using a 500 VDC insulation resistance tester. Between the power supply input terminal
and case
Dielectric strength 500 VAC (50/60 Hz) for 1 minute Between power supply input terminal
and case