Galil DMC-3425 Manual De Usuario
DMC-3425
Appendices
• 177
4
The screw terminals for ACMDX and ACMDY can provide access to 2 sets of signals, depending on
the placement of the 2 jumpers on JP3.
5
If the Opto-isolated input option is used, the output compare is NOT brought out to the ICM-1460. If
the output compare is to be used in conjunction with the opto-isolation, pin 23 of the Cable 37-Pin D
must be brought out externally. There are also options for using either terminal 1 or 2 as the Common
connection. Contact Galil for more information.
must be brought out externally. There are also options for using either terminal 1 or 2 as the Common
connection. Contact Galil for more information.
Opto-Isolation Option for ICM-1460
The ICM-1460 module from Galil has an option for opto-isolated inputs and outputs. This option is
specified as ICM-1460-OPTO*. With this option, the user is able to use voltages up to 24V on the
inputs and outputs of the controller.
specified as ICM-1460-OPTO*. With this option, the user is able to use voltages up to 24V on the
inputs and outputs of the controller.
The common point for the opto-isolation may be chosen from any of the following pins: pin 1 (labeled
as +12V), pin 2 (labeled as –12V) or pin 13 (labeled as CMP/ICOM). When pin 1 is used as
input/output common, the +12V output be comes inaccessible, when pin 2 is used, the –12V becomes
inaccessible, and when pin 13 is used, the output compare function is not available. This common
point must be specified at the time of ordering.
as +12V), pin 2 (labeled as –12V) or pin 13 (labeled as CMP/ICOM). When pin 1 is used as
input/output common, the +12V output be comes inaccessible, when pin 2 is used, the –12V becomes
inaccessible, and when pin 13 is used, the output compare function is not available. This common
point must be specified at the time of ordering.
The ICM-1460 may also be configured such that the input/output common is jumpered to the internal
Vcc (+5V). By doing this, no screw connection is needed so no signals are lost.
Vcc (+5V). By doing this, no screw connection is needed so no signals are lost.
A final option for the opto-isolation is for separate input/output commons. This allows the user to have
different voltage levels for the inputs and outputs. However, this requires the use of both pin 1 and pin
2 on the screw connection, making both +12V and –12V inaccessible on the screw terminals.
different voltage levels for the inputs and outputs. However, this requires the use of both pin 1 and pin
2 on the screw connection, making both +12V and –12V inaccessible on the screw terminals.
Opto-isolated inputs:
The signal "IN[x]" below is one of the isolated digital inputs where x stands for the digital input
terminals.
terminals.
By connecting the OPTO-COMMON to the + side of an isolated power supply, the inputs will be
activated by sinking current. By connecting the OPTO-COMMON to the GND side of the power
supply, the inputs will be activated by sourcing current.
activated by sinking current. By connecting the OPTO-COMMON to the GND side of the power
supply, the inputs will be activated by sourcing current.
The opto-isolation circuit requires 1ma drive current with approximately 400 usec response time. The
voltage should not exceed 24V without placing additional resistance to limit the current to 11 mA.
voltage should not exceed 24V without placing additional resistance to limit the current to 11 mA.