Eltorque QT50 User Manual

Operation
User Manual QT50 Doc ID 1321 version 2.0 Sept. 2018
Page 47 of 62
TEMPERATURE alarm

Trigger conditions: The alarm is activated when the temperature of the
actuator is near the max operating temperature of the internal electronics.
This may happen if the environmental temperature is higher than the max
rated temperature for the actuator or if the actuator has been run with a
higher duty cycle than specified in section 3.3.

Reaction from actuator: The voltage to the motor is cut off if the
temperature increases above the max operating temperature of the internal
electronics. The motor can run again when the temperature alarm is inactive.

Reset conditions: The temperature must decrease well below the max
operating temperature of the internal electronics.
TORQUE alarm
 Trigger conditions: The actuator has been running but has stopped
unexpectedly. This may be caused by too high braking torque on the
outgoing shaft or failure in the motor control and feedback system.
 Reaction from actuator: The actuator stops running.
 Reset conditions: A new position command (OPEN, CLOSE, GOTO, STOP). The
motor can then run again, given that the trigger conditions for the alarm has
disappeared.
Troubleshooting
The Eltorque actuator is a robust maintenance free product, but you might
encounter some issues with the unit. Below is a list of the most common issues
that may occur and how to solve them. If you still have problems, please contact
Eltorque support for further help.
Table 12: Troubleshooting overview
Problem description Cause & solution
No response from actuator either on the control
system or if you connect with E3C. No LED
indicator.
No power supply, check fuses and wiring.
Supply voltage can be checked using a voltage
meter.
L-N voltage should be 110-230 V AC.
The actuator’s alarm output is active; on a
CANopen system, it gives torque alarm.
The actuator attempts to move valve when a
control signal is given.
The valve operation torque is too high, please
check the torque by manual operation.
Be aware that foreign objects in the pipe can
block the valve and that valve torque changes
over time.
OR
The actuator torque has been set too low;
increase it by using E3C as described in section
4.7
On CANopen control systems, the torque can be
adjusted via the CANopen communication.

Eltorque QT50 Specifications

General

Brand	Eltorque
Model	QT50
Category	Controller
Language	English