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G320X SERVO DRIVE
REV 10: May 13, 2010
There are three conditions that will trip the protection circuit. One condition is if there is a short-circuit. The second condition is if
there is no encoder attached; the G320X detects if one or more encoder wires are not connected. The third condition is if the
POSITION ERROR exceeds the set following error limit. This condition can have several causes:
) The loop settings are severely under-damped and the motor breaks out into oscillation.
2) Excessive motor load due to acceleration or workload.
3) The speed command in excess of what the motor can deliver.
4) The current LIMIT is set too low.
5) The power supply current is insufficient for the demand.
6) The power supply voltage is below 8 VDC.
7) The motor is wired backwards, is broken or disconnected.
8) Encoder failure.
The IN-POSITION indicator (green LED) is lit when the motor is within 2 increments of motion of the commanded position. If the
motor is out of position by more than two increments of motion the indicator will not be lit.
The Warn indicator (yellow LED) is lit whenever the motor is more than 28 counts off of the commanded position. Its purpose is to
give warning that a large following error is probably developing and will result in the drive going into FAULT (red LED) if measures
are not taken to arrest the increasing following error.
The Power indicator (green LED) is lit whenever there is power applied to the G320X.
ERROR / RESET PIN
This terminal functions as an ERROR output and as a RESET input. Because this terminal functions as both an input and an output,
some detailed description is necessary.
When first testing the G320X, ERR/RES (Terminal 5) was connected to ENC+ (term. 7). It can be left that way if it is not necessary
to read the state of the ERROR output. Otherwise, the following details are important.
The ERROR output is latched in the “ERROR” state (Terminal 5 = “0”) by the power-on reset circuitry in the G320X. It will stay in this
state indefinitely until it is cleared by applying +5V to this terminal for at least second.
The voltage on this terminal is +5VDC when the G320X is functioning normally. The voltage on this terminal goes to 0VDC
whenever the FAULT indicator is lit. This output can be used to signal your controller that an error has occurred.
Normally when the G320X is first powered up, it will be necessary to push the momentary switch to START for second. This will
clear the power-on reset condition and extinguish the FAULT LED. The motor will then be enabled and the drive will begin to
operate. If at any time after that a condition occurs that causes the G320X to “FAULT out”, such as not being able to complete a
step command, the ERR/RES terminal will go to “0”, signaling to the controller an error has occurred. This will require the operator
to correct the problem that caused the FAULT and then push the switch to “START” for second to re-enable the G320X.
At anytime the operator can push the switch to the “STOP” position to immediately halt the G320X drive. Anytime the G320X is in
the “FAULT” state (FAULT LED lit), all switching action stops, the motor freewheels and is unpowered.
DIS LAIMER
CERTAIN APPLICATIONS USING POWER PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY
OR SEVERE DAMAGE TO PROPERTY. GECKODRIVE INC. PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR OTHER CRITICAL APPLICATIONS. INCLUSION
OF GECKODRIVE INC. PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE PURCHASER’S OWN
RISK
In order to minimize risks associated with the purchaser’s application, adequate design and operating safeguards must be provided
by the purchaser to minimize inherent or procedural hazards. GECKODRIVE INC. assumes no liability for applications assistance or
the purchaser’s product design. GECKODRIVE INC. does not warrant or represent that any license, either express or implied, is
granted under any patent right, copyright or other intellectual property right of GECKODRIVE INC.
