D-style CPU, I/O and Communications Power
D-style CPU, I/O and Communications Power
CPU Power Requirements
Requirement:
Maximum of 5 VDC on any I/O
pin or 5 VDC pin.
Details:
D-style SmartMotors have an internal 5 VDC power supply to run the internal CPU. This
supply can be easily damaged if an external voltage source of a higher voltage potential is applied.
Therefore, do not exceed 5 VDC on any TTL-level I/O pin or 5 VDC pin.
I/O Power Requirements
Requirement:
Maximum sink amperage = 25 mA; Maximum source amperage = 25 mA.
Details:
Each on-board 5-volt I/O pin has a minimum amount of protection consisting of a 100 ohm
current-limit resistor and a 5.6 VDC Zener diode. Each I/O pin also has a 5 kohm pull-up resistor.
When assigned as outputs, they act as a push-pull amplifier that drives hard to either the positive or
negative 5 VDC rail. This means they are not open-collector I/O pins. Each I/O pin can sink up to 25
mA and source up to 25 mA. Exceeding this could result in damage to the I/O port.
The AD1 option on the D-series motor provides isolated 24-Volt I/O. The user must supply the 24
volts at the I/O power input (pin 11) on the round 12-pin connector.
CAUTION:
For Class 5 D-style AD1 option motors, at no time should the voltage
to any input exceed the level on the I/O power input (pin 11). Doing so could
cause immediate damage to the expanded I/O hardware.
Communications Power Requirements
Requirement:
Proper serial ground signal referencing and shielding techniques are required; do not use
the cable shield for the RS-232 ground reference.
Details:
The D-style SmartMotor has a two-wire RS-232 port. This port meets IEEE standards with full
+/-12 VDC potential on the transmit line. Proper serial ground signal referencing and shielding
techniques must be used. Under no circumstances should the shield of a cable be used for the RS-232
ground reference. This could result in noise or corrupt data as well as ground loops that could damage
the serial port chip set.
M-Style CPU, I/O and Communications Power
CPU Power Requirements
Requirement:
Nominal 24 VDC (±20%) must be supplied. Do not exceed 32 VDC.
Details:
Power is supplied from the "control" power input (pin 1) on the 4-pin power input connector.
I/O Power Requirements
Requirement:
Nominal 24 VDC (±20%) must be supplied. Do not exceed 32 VDC.
Details:
Power is supplied from the "control" power input (pin 1) on the 4-pin power input connector.
NOTE:
This I/O is not isolated from the CPU's power supply and the motor drive.
Moog Animatics Class 5 SmartMotor™
Installation and Startup Guide,
Rev. I
Page 34 of 76