YK-PVCCS1000 Program Controlled Constant Current Source 0-1A High Precision Voltage Controlled Current Source

YK-PVCCS1000 Program Controlled Constant Current Source 0-1A High Precision Voltage Controlled Current Source

Description:
- YK-PVCCS1000 is a programmable and voltage controlled constant current source with an output range of 0~1000mA. It supports voltage input of 0-5V to control output current, or uses for Modbus RTU protocol through RS485 interface to control current output. This device provides a trigger interface that can be used to switch output current or synchronize with other devices. In addition, it adopts an active fan cooling design, effectively reducing the impact of temperature drift. YK-PVCCS1000 has a wide range of power supply voltages and clear interface design, allowing users to easily integrate it into their own systems. This device is suitable for various application scenarios, including constant current driving of lasers, LEDs, and LDs, constant current driving of sensors, driving of solenoid valves, and providing excitation signals.

Specification:
- Model: YK-PVCCS1000
- Module type: program controlled & voltage controlled - constant current source
- Power supply voltage: 5 - 30V (≥1.2A)
- Static power consumption: 1.5W (for reference only)
- Output current range: 0 - 1000mA
- Driving load range: 0 - 2Kohms (The larger the load, the smaller the maximum output current, which can drive inductive loads.)
- Maximum output voltage: 26.5V at power supply 30V
- Control method:
  Voltage controlled: 0 - 5V corresponding to 0 - 1000mA
  Program controlled: program controlled step 1mA
- Voltage controlled width: ≤10kHz
- Voltage controlled sensitivity: 1V/200mA (at 2.5%)
- Program controlled precision: 0.2mA (typ.)
- TRI trigger: 0-1V for floating or low-level on output; 2-5V for high level off output
- Trigger frequency: ≤10kHz
- Communication interface: RS485
- Communication protocol: for Modbus-RTU
- Baud rate: 9600 (adjustable) (data bit: 8-bit; no calibration, stop bit: 1-bit)
- Power-on start time: 40ms (typ.)
- Establish a constant current stabilization time: 20us for voltage-controlled; 25ms for program-controlled
- Current response speed: 20us
- Load regulation: 0.003
- Current stability: 99.94% ~ 99.99%
- Working temperature: -25℃ to 85℃
- Storage temperature: -65℃ to 150℃
- Module protection: yes (power supply anti-reverse protection)
- Module heat dissipation: active fan heat dissipation
- Module size: 130 x 90 x 40mm
- Net weight: 220g
- Interface type: 3.81 wiring terminal

Regarding the selection of power supply voltage: in order to maximize the performance of the module, the power supply voltage should be slightly higher than the voltage across the load (3.5V).
- The specific calculation method is as follows: V (power supply) = IOUT x RL + 3.5
- For example, if the set output current is 50mA and the connected load is 100 ohms, the voltage at both ends of the load is 5V. Choosing a power supply voltage of 8.5V can maximize the performance of the module.

Regarding load impedance: the larger the load impedance, the smaller the maximum output current range.
- The specific calculation method is as follows: IOUTmax = (V power supply - 3.5)/RL
- For example, when the power supply is 20V and the load is 1KΩ. The maximum output current is 16.5mA.

Package Included:
- 1 x Constant Current Source

Precaution:
(1) To avoid burning out the load due to excessive output current, the corresponding current can be programmed or voltage controlled before connecting the load.
(2) To avoid unnecessary interference, it is recommended to use a low ripple power supply, which should not exceed 30V.
(3) It is recommended to use good wire to observe the effect. Poor contact or inferior wire may cause signal attenuation or excessive noise.
(4) It is recommended to use low resistance wires for wiring, otherwise it may cause excessive line loss or unstable current output.

FAQ:
Q: How to adjust the output current?
A: The output can be controlled by a switch to adjust the output current size through program control or voltage control. The output current range is 0~1000mA.

Q: Why can't the load output 1000mA with a 1KΩ resistor?
A: The larger the load impedance, the smaller the maximum output current range. The specific calculation method is as follows: IOUTmax = (V power supply - 3.5)/RL. It is recommended to reduce the load resistance before testing.

Q: Can this product directly drive the solenoid valve?
A: Yes, it can directly drive inductive loads such as solenoid valves and coils.

Q: Does it can be used as AC constant current source?
A: Sure, input AC voltage for voltage controlled or continuously change the output current for program controlled. But it cannot output negative current.