Control valves
Electric actuators
4.3.27
ISO 9001
Cert. No. LRQ 0963008
Description
The EL3500 series actuators are suitable for on/off control,
modulating control with valve motor drive controller or modulating
control with its integral valve positioner electronics.
This actuator range can be used with the following valves:
2-port
SPIRA-TROL
BX, BM, SB, KA, KB, KC and NS
3-port TW
Operation
The drive of a synchronous motor is converted into a linear motion
of the actuator stem by using a spur gear transmission. An integrated
spring package limits the stem force to a 600 N thrust in both
directions. Installed torque switches, switch off the actuator
automatically, when the specified stem force is reached.
Available types
The EL3500 series actuators are available in the following configurations:
Spring reserve actuators have the suffix SR or SE appended to the
basic actuator code e.g. EL3501SE. Where:
SR = Spring retract.
SE = Spring extend.
EL3501, 230 Vac operating voltage for ON/OFF control or modulating
control with external valve motor drive controller.
EL3502, 24 Vac operating voltage for ON/OFF control or modulating
control with external valve motor drive controller.
EL3501SE, 230 Vac operating voltage for ON/OFF control or
modulating control with external valve motor drive controller with
the benefit of spring extend on power failure.
EL3502SE, 24 Vac operating voltage for ON/OFF control or
modulating control with external valve motor drive controller with
the benefit of spring extend on power failure.
EL3512, EL3512SR, EL3512SE, 24 Vac operating voltage with
0 to 10 Vdc, or 2 to 10 Vdc control signal. For 4 - 20 mA control
signal use a 500 resistance across the signal source,
see Installation and Maintenance Instructions for full details.
Modulating control from any controller providing this control signal.
Approvals
This equipment is CE marked, and conforms to EN 50081-1
and 50082-2 (EMC), EN 60730-1 (safety), following the
provisions of directives 89 / 336 / EEC amended by 92 / 31 / EEC
and 93/ 68/EEC (EMC) and 72/23/EEC amended by 93/68/EEC.
TI-P321-13
CH Issue 6
Actuators with spring
reserve (SR and SE)
EL3500 Series
Electric Actuators
3
2
4
3
2
1
1
Actuators
spring
without
reserve
Material
Ambient limits
Storage temperatures
Operating temperatures
Materials
No.
Part
1
Yoke
2
Base
3
Cover
4
Handle
Protection
Aluminium die casting
Glass fibre reinforced plastic
ABS-FR
ABS-FR
-40 to +70°C at 5 to 95 % RH
-10 to +50°C at 5 to 95 % RH
IP rating
Insulation for EN 60730
Flame resistant to UL 94-V0 (with metal cable gland)
Maximum valve medium temperature +150°C*
* For temperatures up to 250°C an EL3905 high temperature kit
IP54
Class II
must be used.
Specifications
Model
EL3501
230 Vac +10%
Supply voltage
-15%
50 / 60 Hz
Power consumption
6.5 VA
EL3502
24 Vac ±15%
50 / 60 Hz
4 VA
0.32 mm/s
VMD
NO
YES
EL3501SE
230 Vac +10%
-15%
50 / 60 Hz
12 VA
0.19 mm/s
VMD
YES
NO
EL3502SE
24 Vac ±15%
50 / 60 Hz
11 VA
0.19 mm/s
VMD
YES
NO
EL3512
24 Vac ±15%
50 / 60 Hz
5 VA
0.32 mm/s
0 - 10 Vdc
2 - 10 Vdc
(4 - 20 mA)
NO
YES
EL3512SE
24 Vac ±15%
50 / 60 Hz
12 VA
0.19 mm/s
0 - 10 Vdc
2 - 10 Vdc
(4 - 20 mA)
YES
NO
EL3512SR
24 Vac ±15%
50 / 60 Hz
12 VA
0.19 mm/s
0 - 10 Vdc
2 - 10 Vdc
(4 - 20 mA)
YES
NO
© Copyright 2006
Actuator speed
Control signal
Spring reserve
Manual handle
0.32 mm/s
VMD
NO
YES
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
