Comdel ESC-2/FP Benutzerhandbuch - Seite 8

Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Tragbarer Generator Comdel ESC-2/FP herunter. Comdel ESC-2/FP 17 Seiten. Electrostatic voltage source

Seite drucken

The first menu screen will allow you to set the output voltage (Vset) with the front panel knob. By

turning the knob clockwise, the voltage setting increases. The minimum setting is 25V, the

maximum, 2000V. The default setting is 50V. The voltage setting changes in 10V increments.

Pressing the > button once will activate the Ilim setting screen. Turning the front panel knob

counter-clockwise will decrease the current limit setting. The current setting changes in 0.1mA

increments. The output current (Ilim) may be set to any value from 0.1mA to 3mA. The default value

is 3mA.

Pressing > again will access the ramp-up (RMUP) setting screen. This adjusts the output voltage

rise (from 0 to final set point) over the range of .1 second to 9.9 seconds. Turning the program knob

clockwise increases the ramp-up time. The ramp-up starts as soon as high voltage is enabled. The

default is .1 seconds.

Pressing > will access the ramp-down (DNRM) setting. This adjusts the time it takes the output to

return to 0 from its present setting. This is adjusted over the range of .1 to 9.9 seconds by turning

the knob clockwise. The ramp starts when the HV enable is removed. The default is .1 seconds.

By pressing the > button again, the auto discharge (ADIS) feature may be accessed (default is ON).

Turning the program knob selects ON or OFF. The auto discharge circuit dumps the output voltage

through a relay/resistor network each time the HV enable is removed. Note that the auto discharge

will activate each time the HV enable is removed, and occur at the end of the down-ramp cycle.

The final selection screen can be accessed by pressing >. This is the auto voltage reversal (AREV)

function. Turning the program knob selects ON or OFF. This function automatically reverses the

output voltage polarity each time HV is enabled.

Once all of the appropriate settings have been entered, the unit is enabled by pressing the enable button,

located to the left of the program knob. Pressing this button again will disable the unit.

B. Remote Manual Operation

The ESC-2 may be run entirely by the remote operation functions by connecting your controller interface to the

rear panel Analog INTERFACE connector (DB25S). This requires a minimum of the following signals:

•

Voltage set point (0-10Vdc analog)

•

Current limit set point (0-10Vdc analog)

•

HV enable (digital 24Vdc signal where enable + 24V present)

•

HV discharge circuit enable (digital 24Vdc signal where disable = 24V present)

Typical remote operation is as follows:

Upon applying 24Vdc power, the unit will initialize to the default remote manual (RM) mode.

Apply an analog voltage between Interface Pins 14 and 1 of 0-10Vdc. This will request 0-2000Vdc

output.

Apply an analog voltage between Interface Pins 15 and 2 of 0-10Vdc. This will set the output

current limit to a level of 0-3mA. Normally, a 10Vdc level would be set to allow full output current

operation.

Apply a 24Vdc signal between Interface Pins 20 and 8 to disable the HV discharge relay.

Apply a 24Vdc signal between Interface Pins 18 and 6 to enable the HV output. Removing this

signal will disable HV.

After disabling HV, the output may be discharged by removing the 24Vdc signal between Interface

Pins 20 and 8. Discharge is via 200KOhms. Discharging the output while the unit is enabled will

cause the output to be immediately disabled, and the output to be discharged as a safety feature.

CAUTION: It is not recommended that the discharge utility be used as the enable/disable function of the unit.

At any time during system disable, a 24Vdc signal may be applied between Interface Pins 19 and 7

to reverse the output polarity.

ESC-2/FP Manual