Selectable charge removal layout
Nozzle angle adjustment and joint layout can be selected as desired
UL , CE , CSA Approved
CE : EMC Directive
UL, CSA : Certified by TÜV SÜD America Inc. (NRTL)
The angles of the two nozzles can be adjusted within a range of approximately 190° by screwing down the ends of the nozzles. After adjusting the angle, turn the ends of the nozzles to tighten them and secure them at that angle.
This allows the nozzle angles of the ER-VW to be adjusted easily after installation.
The joint kit (optional) can be used to connect up to a maximum of 5 ER-VW units. The air supply part is connected via quick connection joints, and the power supply and input / output signals can also be connected easily using connection cables with connectors at both ends.
Multiple ER-VW units can be connected together to provide charge removal layouts that suit the target equipment.
Connection application example
ER-VW can utilize air flow levels starting from a minimum of 15 l/min. Because the amount of air consumed is so low, the loads placed on air supply equipment can be reduced and costly clean air can be used much more economically.
A high-frequency 68,000 Hz AC corona discharge is used, so that (+) ions and (-) ions are emitted in rapid alternation. Because there are none of the sudden ion discharges that occur with other types, there is no tendency to partial oppositely-charging even when charge removal insulators with different localized charges, so that any damage to electronic devices can be avoided.
The adoption of high-frequency AC method allows extremely stable ion balance to be achieved. The ion balance is not affected by the pressure of air supplied and the setup distance, so no troublesome adjustments are required after setup.
The thickness of the unit is 18.9 mm 0.744 in. Even so, the nozzle angles can be adjusted, so that they can still be installed in places where there are space restrictions, such as inside other equipment or along several adjacent production lines.
Notes:
1) Minimum width dimensions after nozzle angle adjustment
2) Maximum width dimensions after nozzle angle adjustment
This function causes discharging to stop automatically if the supply of air drops below a certain pressure. Notification of this is given when the AIR indicator lights and the discharge output (DSC) turns off. This prevents objects which are not charged from being overlooked when the air supply has been stopped.
In addition to the air supply monitoring function, the ER-VW is equipped with the following functions to ensure accurate charge removal.
– Discharge halt function:
Uses external input to forcibly stop discharge.
– Check function:
Uses the CHECK indicator and output to notify the operator when it is time to clean or replace the discharge needle.
– Abnormal discharge monitoring function:
Uses the ERROR indicator and output to notify the operator when a problem with discharge occurs, and stops discharge. It can be canceled by means of reset input.
– Discharge output:
Output is ON during discharging. This lets you check when discharging is being carried out.
– Check output:
Output turns ON when the discharge needle is dirty.
– Error output:
Output turns OFF when there is a problem with discharging (normally it is ON). It also allows you to check the power supply to the ionizer.
| Type | Spot type | |
| Model No. | ER-VW | |
| Charge removal time (±1,000 V → ±100 V) |
1 sec. or less (Note 2) | |
| Ion balance | ±10 V or less (Note 2) | |
| Ozone generation | 0.05 ppm or less (Note 3) | |
| Applicable fluid | Air (dried clean air) (Note 4) | |
| Supplied air flow | 60 l/min. (ANR) or less | |
| Air pressure range | 0.05 to 0.5 MPa | |
| Supply voltage | 24 V DC ± 10 % | |
| Current consumption | 120 mA or less | |
| Discharge method | High frequency AC method | |
| Discharge output voltage | 2,000 V approx. | |
| Output Check (CHECK) Error (ERROR) Discharge (DSC)(Note 5) |
NPN open-collector transistor – Maximum sink current: 50 mA – Applied voltage: 30 V DC or less (between output and 0 V) – Residual voltage: 1 V or less (at 50 mA sink current) |
|
| Output operation | Check output (CHECK): ON when the discharge needle is dirty or worn, OFF when operation is normal Error output (ERROR): OFF when abnormal discharge is detected, ON when operation is normal Discharge output (DSC)(Note 5): ON when discharging, OFF when discharge halts |
|
| Short-circuit protection | Incorporated | |
| Discharge halt input (DSC OFF) (Note 5) |
Short-circuit to 0 V: Discharge halt, Open: Discharge allowed (operation start) | |
| Reset input (RESET) | In the state that operation is stopped due to an error detection, open 0 V of the power supply from short-circuit state to cancel ERROR | |
| Indicators | Power (POWER) | Green LED (lights up when the power is ON) |
| Discharge (DSC)(Note 5) | Green LED (lights up when discharging) | |
| Air monitoring (AIR) (Note 6) | Orange LED (lights up when no air is being supplied) | |
| Check (CHECK) | Orange LED (lights up when the discharge needle is dirty or worn, etc.) | |
| Error (ERROR) | Red LED (lights up when abnormal discharge is detected) | |
| Ambient temperature | 0 to +55 ℃ +32 to +131 ℉ (No dew condensation), Storage: -10 to +65 ℃ +14 to +149 ℉ |
|
| Ambient humidity | 35 to 65 % RH (No dew condensation), Storage: 35 to 65 % RH | |
| I/O connector | For power & input / output: 8-pin connector, For connection: 9-pin connector | |
| Connectable units | Maximum number of connectable units: 5 (Including this unit) | |
| Enclosure earthing | Capacitor earth | |
| Material | Enclosure: ABS (Nickel plated), Nozzle mount, Screw mount, Nozzle: Stainless steel (SUS), Discharge needle: Tungsten | |
| Weight | Net weight: 110 g approx., Gross weight: 180 g approx. | |
| Accessories | Connector attached cable: 1 pc. (length 0.5 m 1.640 ft), End connector (9-pin): 1 pc., Lead wire for connecting F.G.: 1 pc. | |
Notes:
1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉.
2) A typical sample applied with a supply voltage of 24 V, a distance of 100 mm 3.937 in from the front surface of the air flow outlet and a pressure of 0.25 MPa. (Measured on a sample left in the atmosphere at a relative humidity of 65 % RH or less for 24 hours or more.)
3) A typical sample applied with a supply voltage of 24 V, a distance of 300 mm 11.811 in from the front surface of the air flow outlet and a pressure of 0.25 MPa.
4) Dried clean air is the air passing through air dryer (dew point –20 ℃ –4 ℉ approx.) and air filter (mesh size 0.01 μm0.0004 mil approx.)
5) “DSC” is an abbreviated name of “DISCHARGE”.
6) Discharge halts when lights up.
