SERVO MOTORS FOR AIR DAMPERS AND BUTTERFLY VALVES
MT4000 Series
INSTRUCTION SHEET
EN
2C-0035SZ20 R0604
APPLICATION
The MT4000, MT4001, MT4002 and MT4003 are servo
motors to control and govern air lock of gaseous and liquid
fuels.
The servo motors are suitable in burners with small to
medium capacity.
SPECIFICATIONS
Models
MT4000A series for combustion air dampers and VF5000
butterfly valves. External signals for modulation required.
MT4000B series for combustion air dampers and VF5000
butterfly valves. Including relay for one external modulation
input.
MT4001A series for air dampers in gas burners. To be used
with full featured ignition controllers and 3 wire thermostats.
MT4001B series for air dampers in gas burners. To be used
with full featured ignition controllers and 2 wire thermostats.
MT4001C series can be used with satronic TMG740. The
ignition controller is providing the burner sequence, including
the drive to high fire during pre--purge.
MT4002B series for air dampers in oil burners. Including relay
for 2 wire thermostat connection.
MT4003C series can be used with standard low featured
ON/OFF ignition controllers,where the pre--purge is provided
by the servomotor. Including relays for 2 wire thermostat
connection, low fire adjustment switch and fail safe pre--purge
timer.
Dimensions
See Fig. 1. Installation drawing MT4000 Series
Supply voltage
Line voltage:
220 ... 240 Vac, 50/60 Hz
110 Vac, 50/60 Hz
Maximum voltage
Current of micro--switches: 250 Vac, 10A (ac) and 2A(dc)
Ambient temperature range
--15 ... 60
°
C
Relative humidity: 0 -- 90% at 40
o
C (non--condensing)
Rated torque value
Maximum torque at 6s rotation time over 90 degrees: 1.5 Nm
Maximum torque at 12s rotation time over 90 degrees: 1.5 Nm
Maximum torque at 24s rotation time over 90 degrees: 3.0 Nm
Maximum diagonal force
300N, when mounted with 4 screws
Stroke timing over 90 degrees
6, 12, 24 and 30 s at 50 Hz
At 60 Hz, the timing is reduced with approximately 20%
Maximum adjustable stroke
0 to 160 degrees
Enclosure
IP40
Minimum camshaft step
2 degrees (including mechanical tolerances)
Electrical connection
Two PG9 wiring conduits are provided in the housing.
NOTE: Do not provide strain--relief according to
EN60730
Finish
The servo motor is mounted in a black housing and
transparent plastic cover, which can be removed by loosening
2 screws.
Pre--purge timer (MT4003C only)
20 seconds, tolerance --0 s, +10 s.
Design life
Model
Number of Cycles
All models
MT4000
Series
250.000
Standards and approvals
The MT4000 Series conform with the folowing EC directives:
•
Low Voltage Directive (73/23/EEC)
PIN: 0063AR1582
•
Electro Magnetic Compatibility Directive (89/336/EEC)
•
EN298 for MT4003C with pre--purge timer
