VICI EUT Universal Electric Actuator - Manual (Page 9)


Basic Control Functions with the Standard Interface
Basic actuator control functionality facilitates position
switching in two position modes, and step and home
functions in the mulitposition mode. This is done via
direct input signals from switch closures, relay contacts,
or TTL-compatible interfaces. The control cable has six
pins: however, only five are used.
If the actuator has none of the optional interfaces,
the manual remote must be used to change the mode,
direction of rotation, or number of positions. Refer to
“Using the Manual Remote to Configure the Actuator”
on page 3.
�����
�������
�����
�������
�����
�����
�����
�������
�����
��������
�����
��������
����� ��������
� ������������������
� ������
� ������������������
� ���������
� ������
� ���������
����� ��������
� ������
� ������
� ������
� ����
� ������
� ����
Figure 4:
Standard interface connector
(colors reference cable I-25176)
Figure 5: Two position pin
assignments
Two position modes
Pins 4 and 6 are digital inputs for switching to
Position A and Position B. They can be driven either
by 5 volt TTL/CMOS logic or by contact closure to
ground (pin 2). In other words, applying a connec-
tion (20 msec minimum) between the “A contact” and
common moves the injector to position A (inject).
The injector does not move when the connection is
released. Likewise, providing a contact between the
“B contact” and common moves the injector to the B
(load) position. Connections must be released before
the opposite closure can be applied.
Position feedback is obtained from the A and B outputs.
These are 5 volt tolerant, 3.3 volt logic outputs, sourcing and sinking a maximum of
10 milliamperes each. An output will go high (+3.3V) when the valve reaches the
respective position.
Multiposition mode
Step Command
Applying a connection (20 msec minimum) between the
common and “Step” pin causes the actuator to move to the
next position in the currently-set direction of rotation. The
connection must be opened before another step can be
made.
Home Command
Applying a connection between the common and “Home”
pins causes the actuator to go to the HOME position (position
1), moving in the currently-set direction of rotation. The con-
nection must be opened before another step can be made.
Figure 6: Multiposition
pin assignments