Danaher Motion Standalone MMC, Hardware Manual

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30 Standalone MMC Hardware Manual
Installation, Operation, & Maintenance
version 15.1
Danaher Motion
•
Standalone MMC Control - If the green Power light (P) starts flashing, the battery
must be replaced. Follow the battery replacement procedure in
section 4.8 on
page 87 .
•
Standalone Digital MMC Control - If the Diagnostic Status Light flashes code 621
(see
section 3.8.6 on page 31 ), the battery must be replaced. Follow the battery
replacement procedure in section 5.6 on page 115 .
3.8.3 Scan Status
The green Scan light (S) indicates that the application program is running. If the Scan
light does not go on:
1. Check that the power light (P) is ON.
2. Check that the diagnostic light (D) is OFF.
3. Verify that there is a Ladder in the MMC’s application memory.
Whenever the scan light is out, the discrete outputs go to the OFF state and the
analog outputs are zeroed.
3.8.4 Power-up Diagnostics Status
When the system is powered up, it tests itself and reports the results of the tests using
the yellow Diagnostic light (D).
When power is applied to the MMC, the Diagnostic light comes on briefly while its
diagnostic tests are running. After the power-up diagnostics run, the Diagnostic light
will be in one of the following states:
• off, indicating that the MMC is operating correctly.
• on, indicating that the power-up diagnostics found a hardware problem with the
MMC.
3.8.5 Run-time Diagnostic Status
When the application is running (the Scan light is on), the Control constantly monitors
the system for proper operation, and the yellow Diagnostic light (D) will be in one of
the following states:
• off, indicating that the MMC is operating correctly.
• flashing a three digit error code (see section 3.8.6 on page 31 )
• continuously pulsing from bright to dim, indicating one of the following:
• The Servo Setup Function used in the ladder was compiled with a PiCPro ver-
sion prior to 16.0. Recompile the Servo Setup Function, then compile and
download the ladder with PiCPro 16.0 or greater.
• The application has accessed an array element beyond the defined array
boundary. Avoid this practice.
NOTE
Power-up diagnostics are run only when the system is powered up. It is pos-
sible that a failure might occur during operation. If so, the Diagnostic light re-
mains off. If you suspect that the MMC might be defective, cycle power to run
diagnostics again.