Siemens LMV37.420A1 User Manual

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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 10 Actuators X53 / X54 01.12.2009
Example of an actuator with counterclockwise rotation:
When referencing in the CLOSED position, the actuator first travels a certain distance
into the working range (towards the OPEN position). Then, it travels to a position repre-
senting maximum -7.7°, thereby crossing the reference mark for the fist time. Then, the
actuator moves in the other direction again and detects the inner ramp of the reference
mark. This is the reference point used by all positions. If the reference point is param-
eterized in the OPEN position, referencing takes place in a mirror-symmetrical manner.
In that case, the actuator first travels into the working range (towards the OPEN posi-
tion). Then, it crosses the reference mark and travels to a position representing maxi-
mum 110.6°, then back to the inner ramp of the reference mark.
9
0
° (u
sa
b
l
e
r
a
n
g
e
)
Close (0° 0.6°)
Reference range "Close”
Range stop "Close"
Reference range "Open"
M
o
d
u
l
a
t
i
o
n
r
a
n
g
e
Range stop "Open"
1
8
.
5
°
2
0
.
6
°
5
.
6
°
7.7°
1
1
0
.
6
°
(
w
o
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k
i
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f
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“
O
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)
Figure 43: Angle definitions with SQM33…
Error
code
Diagnostic
code
Meaning for the LMV37.4... system
85 0 Referencing error of fuel actuator
1 Referencing error of air actuator
Bit 7
Valency
≥128
Referencing error due to parameter change

Siemens LMV37.420A1 Specifications

General

Brand	Siemens
Model	LMV37.420A1
Category	Control Unit
Language	English