Delta RMC151 - Manual (Page 669)

7 Hardware
Logic 1 (True, On) Low impedance (50 Ω maximum)
Logic 0 (False, Off) High impedance (<1 µA leakage current at 250 V)
Power
Voltage +24 VDC ± 15%
Inrush Current 5A for 150 µs typical
Current - 3 slots Typical 290 mA @ 24 VDC, max 375 mA
4 slots Typical 385 mA @ 24 VDC, max 500 mA
5 slots Typical 485 mA @ 24 VDC, max 625 mA
6 slots Typical 585 mA @ 24 VDC, max 750 mA
DC-DC converter
isolation
500 VAC
Environment
Operating temperature +32 to +140°F (0 to +60°C)
Storage temperature -40 to +185°F (-40 to +85°C)
Humidity 95% non-condensing
Agency compliance CE, UL and CUL. Class I, Division 2 optional.
LEDs
CPU LED
State Description
Steady Off No power.
Steady Green Power is on.
Flashing Green Updating Flash or a controller restart is pending.
Flashing Red
(Uniform on/off) The RMC is in the loader. This should occur briefly when the
controller is powered up. If this occurs during normal operation,
an error has occurred in the controller and it must be reset. Cycle
power to the RMC70 to reset it.
Causes:
o Power Interruption
In certain cases, a power interruption to the RMC may
cause it to go into the loader. Even a very short
interruption, such as 20 msec, can cause problems. This
type of interruption cannot be measured with a standard
multimeter. For accurate power supply verification, use
an oscilloscope or similar high-speed monitoring device.
o Firmware Bug
Certain firmware bugs will cause the RMC to go into the
loader. If this occurs, and power interruptions have been
ruled out, contact Delta Technical support.
Flashing Red
(Pattern) The LED will flash 1, 2, or 3 times, pause and then repeat the
pattern. All of these patterns indicate that the RMC failed a self-
test of the RAM subsystem during startup. This is a non-
recoverable major fault. The module will likely need to be shipped
back to Delta for repair.
Steady Red Non-Recoverable major fault. That is, the module cannot boot at
all, not even into the loader. The module will likely need to be
shipped back to Delta for repair.
RUN LED
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