Hach sc200 - Page 601

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
2
97
LVKB24-
S
R
Pro
p
ortional, Electronic Fail-Safe, Linear, 24 V, for 2 to 10 VDC or 4 to 20 mA
Technical Data
P
ower supp
ly
24 VA
C
± 20% 50
/
60 Hz, 24 VD
C
± 10
%
Power consumption runnin
g
8.5 W
Power consumption holdin
g
2.5 W
Transformer sizin
g
21 VA
(
class 2 power source
)
E
lectrical connectio
n
3 ft, 18 GA plenum rated cable with 1/2
"
conduit connector protected NEMA 2
(
IP54
)
Overload protectio
n
electronic throughout full strok
e
Electrical protectio
n
actuators are double insulate
d
Contro
l
2-10 VDC
O
perating Range Y 2 to 10 VDC, 4 to 20 mA (default
)
Input impedance 100 k
:
for 2 to 10 VDC (0.1 mA), 500
:
fo
r
4 to 20 m
A
Feeback Output U 2 to 10 VD
C
S
tr
o
k
e
0.6" [15 mm]
Linear Force 112 lb
f
[500 N]
Direction of rotatio
n
reversible with switc
h
Position indication stroke indicator on bracke
t
M
anual override 4 mm hex crank (shipped with actuator
)
Running time motor 90 seconds (default), variable (90 to 150
seconds
)
Runnin
g
time
f
ail-sa
fe
35 secon
d
s
Humidit
y
5 to 95% RH non condensin
g
Ambient temperatur
e
-22°F to +122°F
[
-30°C to +50°C
]
S
torage temperatur
e
-40°F to +176°F [-40°C to +80°C]
H
ousin
g
NEMA 2, IP54, UL enclosure type 2
Housin
g
material Aluminum die cast and plastic casin
g
Bridge Time 2 second delay be
f
ore
f
ail-sa
f
e activate
s
Initial Charge
5
t
o
2
0
seco
n
ds
Ag
ency listin
g
s
†
cULus acc. to UL 60730-1A/-2-14,
CAN/CSA E60730-1:02,
C
E acc. to 2004
/
108
/
E
C
and 2006
/
95
/
E
C
Noise leve
l
<55dB
(
A
)
Servicin
g
maintenance
f
re
e
Quality standard I
SO
900
1
Wei
g
h
t
3.6 l
b
s
† Use flexible metal conduit. Push the Listed conduit fitting device over the actuator’s cable to butt agains
t
the enclosure.
S
crew in conduit connector. Jacket the actuators input wiring with Listed flexible conduit.
Properly terminate the conduit in a suitable junction box. Rated impulse Voltage 800V. Type of action 1
.
Control Pollution Degree 3
.
A
pp
licatio
n
F
or fail-safe, proportional modulation of globe valves in HVAC steam and hydronic
s
ystems
.
A
ctuator sizing will be dictated by the valve size selection. All valve selections should
be done in accordance with the
f
low parameters and system speci
f
ications. The
actuator is mounted directly to the globe valve bonnet by means o
f
its universal clamp
and collar
.
The actuator operates in response to a 2 to 10 VDC, or with the addition of a 500
:
resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10
V
D
C
feedback signal is provided for position indication.
O
peratio
n
The actuator is not provided with and does not require any limit switches, but is
electronically protected a
g
ainst overload. The LV series provides 15 mm of downward
travel and a visual indicator indicates position of the actuator. When reachin
g
the valve
end position, the actuator automatically stops. The
g
ears can be manually disen
g
a
g
ed
wi
t
h
a
b
utton on t
h
e actuator cover
.
The LVK… series actuators use a sensorless brushless DC motor. The ASIC inside
monitors and controls the actuator’s rotation and provides a di
g
ital rotation sensin
g
(DRS) function to prevent damage to the actuator in a stall condition. Power
consumption is reduced in holding mode
.
A
dd-on auxiliary switches are easily fastened directly onto the actuator body for
s
i
g
nalin
g
and switchin
g
functions. -SR and –MFT models will have an illuminated
green Adaption/Power button to reset and relearn the valve stroke as well as indicate
the actuator is powered. This feature allows the actuator to rescale itself based on the
actual travel
.
F
ail-Safe Indicatio
n
Green LED status indicator li
g
ht sequence:
On: operation ok, no fault
s
B
linking: fail-safe mechanism is active
Off: fault is detected or not in operation / capacitors chargin
g
Dimensions (Inches [mm])
3.9” [98]
1.8” [45]
8.2” [209]
6.6” [167]
6.7” [169]
P10401 - 01/13 - Subject to change. © Belimo Aircontrols (USA), Inc
.