Product Overview

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Siem ens Electrohydraulic actuators for valves CM1N4561en
Building Technologies 2014-06-18
Setting the signal addition
Calib.
UpLo
The operating range of the frost protection
monitor (QAF21.. or QAF61..) can be defined
with rotary switches LO and UP.
Position
of LO
Sequence control
start point
Position
of UP
QAF21.. / QAF61..
operating range
0 1 QAF21..
0 2 QAF61..
In order to determine the stroke positions 0 % and 100 % in the valve, calibration is
required on initial commissioning:
Prerequisites
· Mechanical coupling of the actuator SKD6.. with a Siemens valve
·
Actuator must be in «Automatic operation» enabling stroke calibration to
capture the effective 0 % and 100 % values
· AC 24 V power supply
· Housing cover removed
Calibration
1. Short-circuit contacts in calibration slot
(e.g. with a screwdriver)
2. Actuator moves to «0 %» stroke position (1)
(valve closed)
3. Actuator moves to «100 %» stroke position (2)
(valve open)
4. Measured values are stored
01124
green LED flashes;
position feedback
U inactive
0%
t100%
Stroke
1
2
3
4567Z09
Normal operation
5. Actuator moves to the position (3) as
indicated by signals Y or Z
green LED is lit permanently;
position feedback U active, the values
correspond to the actual positions
A lit red LED indicates a calibration error.
The calibration can be repeated any number of times.
The LED status indication indicates operational status with dual-colored LED and is
visible with removed cover.
LED Indication Function Remarks, troubleshooting
Green Lit Normal operation Automatic operation; everything o.k.
Flashing Calibration in progress Wait until calibration is finished (LED stops
flashing, green or red LED will be lit)
Red Lit Faulty stroke calibration Check mounting
Restart stroke calibration (by short-circuiting
calibration slot)
Internal error Replace electronics
Flashing Inner valve jammed Check valve
Both Dark No power supply
Electronics faulty
Check mains network, check wiring
Replace electronics
As a general rule, the LED can assume only the states shown above (continuously red
or green, flashing red or green, or off).
Stroke control with
QAF21.. / QAF61..
signal addition
SKD62UA only
Calibration
SKD62.., SKD60..
Indication of
operating state
SKD62.., SKD60..