MSXX10, MSXX20 SERIES
63-2607—26
6
Select Actuator Control Signal
MS41XX, MS71XX, MS75XX, MS81XX
These actuators are available in two control types:
— Standard: includes mode selection dial to select the
desired input signal.
— Enhanced: includes different mode selection dial to
select the desired input signal. Also includes dials for
adjusting the input signal zero and span.
NOTE:
Selections are made using a dial that appears on
both the front and back of the actuator (see Fig. 4).
For available options, see Table 5.
To select the control signal simply turn the mode selection
dial to the desired control signal (as indicated on the device
label).
Fig. 4. Dials for control signal and zero/span.
MS31XX
These actuators are available with Sylk address selection
pot and Range/Direct control selector pot. The Range pot
has 3 ranges that cause the actuator to be direct acting
and 3 ranges to cause the actuator to be reverse acting.
NOTE:
When Direct range pot called out, a 0 to 100%
command would associate 0% with full spring
return and 100% with position farthest from
spring return. When Reverse range pot called out,
a 0 to 100% command would associate 100%
with full spring return and 0% farthest from spring
return.
There are 15 effective Sylk addresses that you can choose
from. For example, to select Sylk address 11 move the
range pot to Direct control selection and Sylk address pot
to G.
Fig. 5. Dials for control signal.
Table 5. Actuator Control Signal Selections.
a
Feedback: MS75XXA,H and U.S. S… models are 2-10 Vdc, MS75XXB,E and European S… models are 0-10 Vdc.
b
Feedback: MS75XXA,H and U.S. S… models are 10-2 Vdc, MS75XXB,E and European S… models are 10-0 Vdc.
c
When operating in Modulating mode, the feedback signal matches the control signal.
Non-Standard Stroke
Mechanical Stroke Limit Reduction
For applications requiring a span less than 95 degrees, a
simple adjustment can be made. When the rotational
mounting of the shaft coupling is changed, the actuator
drives less than the full 95 degrees stroke.
The stroke is adjustable in 5 degree increments. Once
adjusted, the actuator drives until the shaft coupling
reaches the mechanical stop (part of the housing). The
stop causes the motor to discontinue driving and the shaft
coupling drives no farther. When the actuator returns, it
stops at the fail-safe position.
32007163-011 Rev. C
Modulating, Forward
Modulating, Reverse
Floating, Forward
Floating, Reverse
Service
Auto Adapt
Start
0V
10V
2V
32V
Span
M20954A
ZERO
LOCKING PIN
SPAN
MODE SELECT
1
1
1
SPAN AND ZERO EXIST ONLY
ON MODELS MS75XXE,H.
M34296A
LOCKING PIN
SYLK ADDRESS
SELECTION
RANGE/DIRECTION
CONTROL SELECTOR
Mode Options
Standard Enhanced
Details
Floating: forward
X
a
X
a
Series 60 control. Power to terminal 4 drives toward spring return position.
Floating: reverse
X
b
X
b
Series 60 control. Power to terminal 3 drives toward spring return position.
Modulating: 0-10 Vdc X
c
Series 70 control. 0 Vdc signal drives toward spring return position.
Modulating: 10-0 Vdc X
c
Series 70 control. 10 Vdc signal drives toward spring return position.
Modulating: 2-10 Vdc X
c
Series 70 control. 2 Vdc signal drives toward spring return position.
Modulating: 10-2 Vdc X
c
Series 70 control. 10 Vdc signal drives toward spring return position.
Modulating: forward
X
Voltage input with adjustable zero and span. Minimum signal drives toward
spring return position.
Modulating: reverse
X
Voltage input with adjustable zero and span. Maximum signal drives toward
spring return position.
Service
X
Actuator hub stops in place and ignores control signal changes.
Auto-adapt
X
For setup only. Rescales to allow full input signal over mechanically limited
stroke.
