Eltorque QT250 - Analog systems; Digital systems; 3.9.6 Installations with Eltorque Hybrid Marine Cable

Product Description
User Manual QT250 and QT800 gen 2.5, ID 2021 2.3 20. April 2021
Page 27 of 92
For the analog interface, both the input and the outputs are passive. Analog has
two outputs. One Alarm output and one Position output (4 to 20 mA) (see Table
7 for details).
Table 7: Relay outputs – analog interfaces
Function
Value
Rated voltage
24 VAC/VDC
Max. switching voltage
24 VAC/VDC
Rated current
1A
Limiting continuous current
1A
Breaking capacity
Max. 48 VA (1A)
For the digital interface, the digital outputs are passive, and the digital inputs are
active with a 5 V/20 mA rating. The digital output must be powered (see Table 8
for details).
Table 8: Relay outputs – digital interfaces
Function
Value
Rated voltage
48V AC/VDC
Max. switching voltage
48V AC/VDC
Rated current
1A
Limiting continuous current
1A
Breaking capacity
Max. 48 VA (1A)
Table 9: Cable requirements and recommendations digital and analog systems
Cable parameter
Required/ Recommended
Number of conductors
6 recommended twisted pair.
Cross section
0.5 – 1.5 mm
2
/0.0197 – 0.0591 in
2.
Shield
Not mandatory but is recommended in case the
actuator is placed in conjunction with equipment
emitting high levels of disturbances.
Bus connection of actuators is undoubtedly the most cost-effective installation
methodology. Eltorque has developed a ground-breaking Hybrid CANbus/Power
cable especially designed for maritime applications.