14
SilentBox® SB EC ... EC Centrifugal Fan Boxes
Installation and Operating Instructions
7.2 Technical data for control inputs
Number of possible fans with
PU / A
PU / A
SU / A-3 10
EUR EC
ETR / DER
ETR / DER
Type
Poti- feed
in V / mA
Control input / set-
value input in V /
A (load)
from the 10 V fan
supply (without
PU/A LED)
from the 10 V fan
supply (with PU/A
LED)
from the 10 V fan
supply
from the 10 V
EUR EC supply
from the 10 V fan
supply
EDR / ETR supply
with external pow-
er supply NG24
SB EC 125 A
10 V / 4 mA
0-10 V / 0.013 mA
(Ri = 769 kOhm)
100
LED not possible
100
100
not possible
100
SB EC 125 B
10 V / 5 mA
0-10 V / 1.0 mA
(Ri = 10 kOhm)
3
LED not possible
3
10
not possible
10
SB EC 160 A
10 V / 4 mA
0-10 V / 0.013 mA
(Ri = 769 kOhm)
100
LED not possible
100
100
not possible
100
SB EC 160 B
10 V / 5 mA
0-10 V / 1.0 mA
(Ri = 10 kOhm)
3
LED not possible
3
10
not possible
10
SB EC 200 A
10 V / 4 mA
0-10 V / 0.013 mA
(Ri = 769 kOhm)
100
LED not possible
100
100
not possible
100
SB EC 200 B
10 V / 5 mA
0-10 V / 1.0 mA
(Ri = 10 kOhm)
3
LED not possible
3
10
not possible
10
SB EC 250
10 V / 5 mA
0-10 V / 1.0 mA
(Ri = 10 kOhm)
3
LED not possible
3
10
not possible
10
SB EC 315 A
10 V / 10 mA
0-10 V / 0.1 mA
(Ri = 100 kOhm)
87
27
85
100
3
100
SB EC 315 B
10 V / 10 mA
0-10 V / 0.1 mA
(Ri = 100 kOhm)
87
27
85
100
3
100
SB EC 355
10 V / 10 mA
0-10 V / 0.1 mA
(Ri = 100 kOhm)
87
27
85
100
3
100
SB EC 400 A
10 V / 10 mA
0-10 V / 0.1 mA
(Ri = 100 kOhm)
87
27
85
100
3
100
SB EC 400 B
10 V / 10 mA
0-10 V / 0.33 mA
(Ri = 30 kOhm)
26
8
25
30
not possible
30
8.0 Servicing and maintenance
m
Touching live parts will lead to electric shock.
Before any servicing and maintenance work, isolate the fan from the mains power supply and protect against
being switching on again!
m
Access to the terminal compartment is only permitted with a disconnected power supply after a 5 min. wait.
m
The rotating impeller can crush fingers.
Before any servicing and maintenance work, isolate the fan from the mains power supply and protect against
being switching on again!
– Excessive deposits of dirt, dust, grease, etc. on the impeller, motor, protection guard and, above all, between the
housing and the impeller, are not permitted, as these can lead to an unbalance in the impeller, overheating of the
motor or the blocking of the impeller. In such cases, the unit must be cleaned.
– In cases of longer periods of standstill, maintenance must be carried out when the unit is restarted.
– In case of standstill or storage for more than 2 years, the motors must be replaced.
The following must be checked:
• Secure attachment of the fan to the subsurface / system, replace in case of doubt
• Remove contaminant deposits
• Mechanical damage, disconnect unit, replace damaged parts
• Tight fit of screw connections, do not loosen screws in the process!
• Casing quality (cracks, brittleness of the plastic)
• Free movement of the impeller, impeller does not move freely, see Fault causes 8.1
Wear protective gloves when checking unhindered running of impeller
!
• Bearing noises
• Vibrations – see Fault causes 8.1
• Current consumption according to type plate – see Fault causes 8.1
CHAPTER 8
SERVICING AND
MAINTENANCE
m
WARNING
nm
m
WARNING
EN
