LTQ008 – LTQ230 Series 3-Phase Products User Instructions – AIIOM000165 EN
Page 14 of 40
5.3 LTQ008 – LTQ230 BIC (230/3 – 480/3 Proportional Control)
These models are designed to be used where there are no existing MCCs. Typically, these are used in new
facilities, or where additions to existing switch gears have available space limitations or is otherwise just not
feasible. The actuator generates a 24V status output that can be used remotely to verify power. These units
accept analog control signals (4 – 20 mA or 2 – 10 VDC), and they process the incoming signals to position the
actuator as a function of the incoming signal. Additionally, these units generate an analog feedback signal
proportional to the position of the actuator, which is not directly related to the incoming signal. This feedback
signal is designed to be used by automation devices or displays external to the actuator.
The inside of the actuator contains:
1. A Reversing Motor Starter. This actuator
is commanded to run CW (0°) or CCW
(90°) as a function of received control
signal compared to the actuator
position. The actuator contains the
required reversing motor starter on the
inside.
2. Phase Correction Circuitry. If phasing is
incorrect at the actuator, the
protective circuitry will automatically
reverse two of the three legs to allow
the motor to drive in the correct
direction. With this built-in protection
device, improper phasing is non-
existent. The installer needs neither
worry about proper phasing being
brought to the actuator, nor possible
phase reversal in the future; it is auto-
correcting.
3. No Local Control Device. There is no
way to operate the actuator locally. It
can only be operated by utilizing an
external PLC, BAS, or other automation
controller generating 4 – 20 mA or 2 –
10 VDC analog signals to position the
actuator between 0° and 90°. Without
some type of automation interface,
there will be no way to command the
actuator to move in either direction.
4. Proportional Controller. This analog
processing PCB accepts 4 – 20 mA or 2
– 10VDC from the field accordingly,
utilizing the reversing motor starter.
Figure 8: LTQ008 – LTQ230 BIC (230/3 – 480/3 proportional control)
wiring diagram
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