Basic Documentation

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Description
Powermite MT Series Electronic Valve Actuators require a 24 Vac
supply to control Powermite MT series valves with a 7/32-inch
(5.5 mm) stroke and a threaded valve bonnet that ts the actuators.
SSC61 Electronic Valve Actuators require a 24 Vac supply and
receive a 0 to 10 Vdc control signal. SSC81 Electronic Valve
Actuators receive a 3-position (oating) control signal.
Features
• UL listed for plenum installations
• Direct coupled, one step installation without special tools
• Close off up to 120 psi
• Manual override
• Visual position indication
• Orderable as an actuator only or as a complete
valve/actuator assembly
Specications
Operating Voltage ................................................................ 24 Vac +20%
Frequency ..........................................................................50/60 Hz +2 Hz
Power Supply ..............Earth Ground Isolating, Class 2, 24 Vac Transformer
Power Consumption
SSC81U ......................................................................................... 0.8 VA
SSC81.5U, SSC61U, SSC61.5U ..........................................................2 VA
Control Signal
Floating (SSC81U, SSC81.5U)
Y2 ......................................................... 24 Vac Retracts Actuator Shaft
Y1 ......................................................... 24 Vac Extends Actuator Shaft
Proportional (SSC61U, SSC61.5U)
Voltage ........................................ 0 to 10 Vdc (Default) or 0 to 40 mA
with External 500 ohm, 0.2W Resistor
Current ....................................................................................0.1 mA
Running Time
SSC81U ................................................................. 125 sec. +2% at 60 Hz
SSC81.5U ......................................................... 125 sec. +2% at 50/60 Hz
Spring Return (Floating, SSC81.5U) ........................................... ~30 sec.
SSC61U, SSC61.5U ........................................... 30 sec. +10% at 50/60 Hz
Spring Return (Proportional, SSC61.5U) ..................................... ~25 sec.
Nominal Stroke ........................................................... 7/32-inch (5.5 mm)
Nominal Force .................................................................... 67 lbf. (300N)
Spring Return (SSC61.5U and SSC81.5U) ........ Non-mechanical, Electronic
Return Fails to Stem up (0 Position)
Agency Approvals ..................................UL/cUL, UL873 Listed, Certied to
Canadian Standard C22.2 No. 24-93
Ambient Temperature
Operation ............................................................41 to 122°F (5 to 50°C)
Transport and Storage ......................................-13 to 158°F (-25 to 70°C)
Ambient Humidity ...................................... 0 to 90% RH, Non-condensing
Wiring Connection ......................... Plenum Cable or 3/8-inch Flex Conduit
Mounting Location ................................................. NEMA 1 (Interior Only)
SSC Series Electronic Valve Actuators
Spring Return or Non-Spring Return
24 Vac, Floating or Proportional Control
EA0796R3
NEUT
CONTROLLER
EARTH GROUND
ISOLATING CLASS 2
24 Vac TRANSFORMER
120 Vac
24 Vac
ACTUATOR
G
Y2
Y1
G0
1
0
0
NEUT
CONTROLLER
ACTUATOR
EARTH GROUND
ISOLATING CLASS 2
TRANSFORMER FOR
24 Vac POWER
120 Vac
1
0
Y2
Y1
G
24
Vac
EA0795R1
Spring Return (Neutral Switching) Non-spring Return Spring Return (Hot Switching)
EA1235R1
NEUT
CONTROLLER
EARTH GROUND
ISOLATING CLASS 2
24 Vac TRANSFORMER
120 Vac
24 Vac
ACTUATOR
G
Y2
Y1
G0
1
0
0
Wiring Diagrams