Galil DMC-2X00 user manual Configuring the Amplifier Enable for ICM-2900 / ICM, Laen Option

Models: DMC-2X00

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active high logic and care should be taken. Using active low logic should avoid any problems associated with the outputs floating high.

Configuring the Amplifier Enable for ICM-2900 / ICM- 1900

The ICM-1900 and ICM-2900 modules can be configured to provide an active low signal to enable external amplifiers. These modules can also be configured for voltage levels other than TTL.

-LAEN Option:

The standard configuration of the AEN signal is TTL active high. In other words, the AEN signal will be high when the controller expects the amplifier to be enabled. The polarity can be changed when using a Galil Interconnect Module. To change the polarity from active high (5 volts = enable, zero volts = disable) to active low (zero volts = enable, 5 volts = disable), replace the socketed IC, 7407, with a 7406. These IC’s are labeled U6 on the ICM-1900 and U2 on the ICM-2900 and can be accessed by removing the cover. This option can be requested when ordering the unit by specifying the -LAEN option.

-Changing the Amplifier Enable Voltage Level:

To change the voltage level of the AEN signal, note the state of the resistor pack, labeled RP1 on the ICM-1900 / ICM-2900. When Pin 1 is on the 5V mark, the output voltage is 0-5V. To change to 12 volts, pull the resistor pack and rotate it so that Pin 1 is on the 12 volt side. If you remove the resistor pack, the output signal is an open collector, allowing the user to connect an external supply with voltages up to 24V.

DMC-2000

ICM-1900 / ICM-2900

100-PIN HIGH DENSITY CABLE

 

 

Connection to +5V or +12V made through

+12V

+5V

Resistor pack RP1. Removing the resistor pack

 

 

allows the user to connect their own resistor to

 

 

the desired voltage level (Up to24V). Accessed

 

 

by removing ICM cover.

 

 

 

AMPENX

SERVO MOTOR

GND

AMPLIFIER

 

 

 

 

7407 Open Collector Buffer. The Enable signal can be inverted by using a 7406. Accessed by removing ICM-2900 cover.

Figure A-5

DMC-2X00

Appendices y 175

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Galil DMC-2X00 user manual Configuring the Amplifier Enable for ICM-2900 / ICM, Laen Option, DMC-2000 ICM-1900 / ICM-2900