Opto-Isolated Outputs On Icm-1900/Icm-2900 (-Opto Option); Standard Opto-Isolation And High Current Opto-Isolation; Controller - Galil Motion Control DMC-18 2 Series User Manual

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No Connection - The DMC-18X2 does not make full use of the functionality of the ICM-2900.
These terminals refer to pins not used by the controller.

Opto-Isolated Outputs on ICM-1900/ICM-2900 (-Opto option)

The ICM/AMP 1900 and ICM-2900 modules from Galil have an option for opto-isolated outputs.

Standard Opto-Isolation and High Current Opto-isolation:

The Opto-isolation option on the ICM-1900 has 2 forms: ICM-1900 (standard) and ICM-1900hc (high
current). The standard version provides outputs with 4mA drive current / output with approximately 2
usec response time. The high current version provides 25mA drive current / output with approximately
400 usec response time.

CONTROLLER

+5V
OUT[x] TTL
The ISO OUT POWER (OUT POWER ON ICM-2900) and ISO POWER GND (OUT GND ON ICM-
2900) signals should be connected to an isolated power supply. This power supply should be used
only to power the outputs in order to obtain isolation from the controller. The signal "OUT[x]" is one
of the isolated digital outputs where X stands for the digital output terminals.
The default configuration is for active high outputs. If active low outputs are desired, reverse RP3 in
it's socket. This will tie RP3 to GND instead of VCC, inverting the sense of the outputs.
NOTE: If power is applied to the outputs with an isolated power supply but power is not applied to the
controller, the outputs will float high (unable to sink current). This may present a problem when using
active high logic and care should be taken. Using active low logic should avoid any problems
associated with the outputs floating high.
64 Extended I/O of the DMC-18x2 Controller
The DMC-18x2 controller offers 64 extended I/O points, which can be interfaced to Grayhill and
OPTO-22 I/O mounting racks. These I/O points can be configured as inputs or outputs in 8 bit
DMC-18x2
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FROM
ICM-1900 / ICM-2900
RP4 on ICM-1900=10K OHMS
RP3
RP2 on ICM-2900
CONNECTIONS
ISO OUT POWER (ICM-1900,PIN 19)
OUT POWER (ICM-2900)
OUT[x] (66 - 73)
ISO POWER GND (ICM-1900,PIN 35)
OUT GND (ICM-2900)
Appendices • 181