Product Specification

1. Product Features

OWPD60PT-24-P10 is a brushless motor driven electric water pump with PWM signal speed regulation,

which is used to drive the coolant to flow in the cooling circuit at a certain flow rate, working

continuously or intermittently, and is equipped with self-diagnosis and fault feedback functions.

  2. The Cope of Use

a.          The water pump is mainly used in server cooling, fixed base station cooling, and charging terminal cooling;

b.          Medium: antifreeze(max 60% glycol)

3. Basic Parameters

4. The Function Description

a. Reverse connection protection function

When the polarity of the power supply of the pump is reversed, the pump will not start, and the pump can operate normally after the polarity of the power supply returns to normal, and there is no impact on the performance.

b. Dry‐running protection function

The pump has built-in no water protection, when the water is running dry, the pump can automatically protect and stop running after a  period  of  idling,  and the pump can operate normally after reconnecting the water after adding water   to normal, and has no impact on the performance.

c. Stall protection function

The impeller of the water pump can make self-judgment when it encounters the blockage of the circulating waterway,  and  the  pump  will automatically stop  after a period of blockage (the time limit is determined according to the stall characteristics), and the pump will be turned on again after the waterway circulation is restored, and the pump can operate normally without affecting the performance.

d. Over Current Protection Function

When the  pump exceeds the protection current during operation, the pump will  run at a reduced speed until it stops, and when the external  conditions  are restored, the normal start of the pump will not affect the function of the pump; Note: It is forbidden to use a mechanical switch to connect the power supply to directly control the motor to turn on when the pump can be tested, and it is forbidden to turn on the machine in the absence of water.

e. Under‐voltage/over‐voltage protection function

When the  normal operating voltage of  the  pump is  exceeded, the pump will run at a reduced speed until it stops, and when the external conditions are restored, the normal start of the pump will not affect the function of the pump.

5. Pump Performance Curve

6. Product connector & speed regulation

a. Harness terminal description

Water pump connector model: Hirschmann805-121-522；

b. Pump Operation Control

Input PWM signal (high level active) requirements: Effective High Level: 14~32V;

Effective low level: 0~6V;

Duty cycle adjustment range: 0~100%;

Frequency:50Hz～ 1000Hz(100Hz recommended)

When the pump is in normal operation, the system MCU judges and outputs PWM signals with different duty cycles to control the pump speed by collecting  the control target parameter information, and the corresponding relationship between  the  input  PWM  duty  cycle  and  the  motor  target  speed  is  as  follows   ( because the PWM signal has a 1% error, it is necessary to avoid using the critical point):

PWM Control Schematic Diagram:

7. Recommended installation methods

      a. Installation Position

Allowable Mounting Position: On the fixed bracket of the device. The installation location and the design of the fixing elements or fasteners must take into

account the requirements of vibration and noise.

The installation must be done in such a way as to avoid water accumulation on the surface or inside the connector.

The connector should be reasonably fixed to avoid damage caused by excessive vibration force of the wiring harness and connector.

b. Bracket Requirements

The design and fixing position of the bracket must take into account the requirements of vibration and noise.

The wiring harness must be secured to prevent it from moving relative to the pump connector.

No other parts are allowed to be fixed on the pump.

8. Overall Size