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Using Phoenix Contact Optima MD/100 Interconnect Modules

The Phoenix Contact Optima MD/100 module provides a convenient field termination for motion control signals that are interfaced to a Galil motion control card, such as the DMC 1700 and DMC 1800 series. Galil controller signals are broken out to individual screw terminals, with connections for stepper motors or servo motors and encoders. Terminals are also provided for limit switches, discrete (digital) I/O and analog inputs to the Galil card.

Each module accommodates up to 4 motion axes. A second module and a cable adapter kit are required for systems with 5 to 8 axes of motion.

When to use the Optima MD/100

Use the... When...
Optima MD/100
  • an enclosure is available. (e.g. controls cabinet or other housing).
  • compact footprint is required. Optima requires 8.5 in X 4 in (22 cm X 11 cm)
  • DIN Rail mounting is required. (MD/100 also includes hardware for mounting to a panel)
  • you require field configurable amp-enable logic
ICM 1900
  • a stand-alone, enclosed module is required.
  • a large mounting area is available. ICM 1900 requires 13.5 in X 7 in (35 cm X 18 cm)
ICM 2900
  • you need a compact through-hole panel mounted module,
  • you require piggy-back mounting to a stand-alone drive
  • you need to plug and unplug motors from the interconnect module.
  • A small footprint is required. ICM 2900 requires 12.25 in. X 2.5 in (32 cm X 7 cm)


The Optima MD/100 has tabs for snap-on mounting to standard 35 mm DIN-Rail. It can also be screwed down to a panel by removing the DIN rail clips and installing mounting ears. (The alternative mounting hardware is included.)

The module may be mounted either vertically or horizontally.

Appropriate mechanical support and strain relief must be provided both for the Galil interconnect cable, and for the field wiring.

The terminal names on the Optima differ slightly from those on the Galil ICM1900 and ICM2900. See the table below for a functional description of each of the Optima MD/100 terminal names.

Amp Enable Configuration:

The Optima MD/100 module has field configurable options for the amplifier enable control logic. All of the necessary hardware ships with the unit.

Amp Enable requires...Use...
Active HighIC 7407 in socket U2 (standard configuration)
Active LowIC 7406 in socket U2 (use alternate chip - provided)
5 Volt pull-upresistor pack RP1 with pin 1 at the 5V mark
12 Volt pull-upresistor pack RP1 with pin 1 at the 12V mark
No Pull-upremove resistor pack from the RP1 socket
(Amp Enable output signal is an open collector)
other voltagesremove resistor pack from the RP1 socket
The open collector Amp Enable output signal may be pulled up externally to a maximum rail voltage of +24 V.


IC Chips are static sensitive devices! Be certain to use appropriate grounding and ESD prevention procedures when handling these chips.
Standard configuration for ICM 1900/2900 is Active High. Galil does not provide the optional 7406 (Active Low) chip with the unit.

Additional Information:

See the Galil website for additional information and related support documentation.
See the Phoenix Contact website for product information:
Wiring Table:
Lower Tier: Stepper Signals, X EncodersMiddle Tier: Y,Z,W Encoders, Analog InputsUpper Tier: Limit Switches, I/O
GNDSignal Ground5 V+5 Volts DCNC
GNDSignal GroundGNDSignal GroundGNDSignal Ground
5 V+5 Volts DCA+ YY Axis main encoder A++12+12 Volts DC
ERRError outputA- YY Axis main encoder A-5 V+5 Volts DC
RSTReset InputB+ YY Axis main encoder B+LSCLimit Switch Common
CMPCircular Compare outputB- YY Axis main encoder B-HMWHome limit switch Axis W
GNDSignal GroundI+ YY Axis main encoder Index+RLWReverse limit switch Axis W
GNDSignal GroundI- YY Axis main encoder Index-FLWForward limit switch Axis W
MCWMotor Command Axis W5 V+5 Volts DCHMZHome limit switch Axis Z
MCZMotor Command Axis ZGNDSignal GroundRLZReverse limit switch Axis Z
MCYMotor Command Axis YA+ ZZ Axis main encoder A+FLZForward limit switch Axis Z
MCXMotor Command Axis XA- ZZ Axis main encoder A-HMYHome limit switch Axis Y
SGWSign output Axis WB+ ZZ Axis main encoder B+RLYReverse limit switch Axis Y
PMWPulse output Axis WB- ZZ Axis main encoder B-FLYForward limit switch Axis Y
SGZSign output Axis ZI+ ZZ Axis main encoder Index+HMXHome limit switch Axis X
PMZPulse output Axis ZI- ZZ Axis main encoder Index-RLXReverse limit switch Axis X
SGYSign output Axis Y5 V+5 Volts DCFLXForward limit switch Axis X
PMYPulse output Axis YGNDSignal GroundGNDSignal Ground
SGXSign output Axis XA+ WW Axis main encoder A++12+12 Volts DC
PMXPulse output Axis XA- WW Axis main encoder A-5 V+5 Volts DC
AEWAmp Enable Axis WB+ WW Axis main encoder B+INCInput Common
AEZAmp Enable Axis ZB- WW Axis main encoder B-IN1Input 1
AEYAmp Enable Axis YI+ WW Axis main encoder Index+IN2Input 2
AEXAmp Enable Axis XI- WW Axis main encoder Index-IN3Input 3
5 V+5 Volts DC5 V+5 Volts DCIN4Input 4
GNDSignal GroundGNDSignal GroundIN5Input 5
A+ XX Axis main encoder A+GNDSignal GroundIN6Input 6
A- XX Axis main encoder A-GNDSignal GroundIN7Input 7
B+ XX Axis main encoder B+ANGAnalog Inputs Ground CommonIN8Input 8
B- XX Axis main encoder B-AN1Analog Input #1ABTAbort Input
I+ XX Axis main encoder Index+AN2Analog Input #2OP1General output 1
I- XX Axis main encoder Index-AN3Analog Input #3OP2General output 2
+12+12 Volts DCAN4Analog Input #4OP3General output 3
+12+12 Volts DCAN5Analog Input #5OP4General output 4
-12-12 Volts DCAN6Analog Input #6OP5General output 5
-12-12 Volts DCAN7Analog Input #7OP6General output 6
GNDSignal GroundAN8Analog Input #8OP7General output 7
GNDSignal GroundGNDSignal GroundOP8General output 8
Document Reference
NDE Software
Winspect Data Acquisition 
Document Number
01/23/2008 Rev: 1.0
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