Comdel ESC-2/FP Руководство по эксплуатации - Страница 9

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CAUTION: Changing polarity during operation is not recommended.

The output polarity reversal feature may be disabled in all modes by connecting Pin 11 to Pin 10 at the rear

panel remote connector.

Remote Analog Interface Connections:

Signal Pin

NOTE

: The center tap voltage monitor is currently set for a 0-5Vdc scale with a nominal 2.5Vdc offset

representing 0Vdc actual at the center tap terminal. Thus, the center tap monitor will have a 0Vdc output for -

500Vdc actual at the center tap terminal, and a 5Vdc output for +500Vdc actual at the center tap terminal.

C. Serial Remote Operation

The operation sequence for serial mode is similar to "Local Manual" operation. Full remote operation is

available over serial RS-232C interface via the real panel 9-pin connector (DB9S). The serial interface

provides all of the features found on the front panel menus.

CAUTION: The default communication protocol is factory set at 9600 baud, 8 bits, 1 stop bit, no parity. These

settings can be changed via internal dip switches. Contact Comdel Engineering for assistance if other protocol

settings are required. Any attempt to change factory settings will void any warranty on the unit.

The following is a description of the RS-232 ASCII instruction set to operate the ESC-2.

All incoming instructions need to be terminated with a carriage return (HEX 'D') except for the

ATTENTION (!) and EXIT (#) commands.

The interface does not normally require handshaking for it's input because it is interrupt driven with a 1K

buffer.

Function

Voltage set point, analog return

Voltage set point, analog positive (10V full scale)

Current set point, analog return

Current set point, analog positive (10V full scale)

Output voltage monitor (10V full scale)

Center tap terminal voltage monitor (See NOTE

Positive output current monitor (10V full scale)

Negative output current monitor (10V full scale)

Monitor circuit analog return

HV enable digital input positive (24Vdc digital)

HV enable digital return

Polarity change digital positive (24Vdc digital)

Polarity change digital return

Discharge command digital positive (24Vdc digital)

Discharge command digital return

HV on indicator positive, open collector (40Vdc/50mA max. rating)

HV on indicator negative, open emitter

Output polarity monitor (+15v=pos/0v=neg)

Polarity indicator return/ground

No connection

Polarity disable

+15Vdc source (25mA max.)

Circuit common / 15v return

ESC-2/FP Manual

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