Greenheck SURE 24 User Manual
RCS Actuators
Sure 24, 25
Optional Manual Override Available
Models
SURE 24, SURE 25
Typical Application
For on/off and modulating control of:
• Part turn ball, butterfly,
plug valves or rotary dampers
when emergency shutdown
or shutoff capability is required
in the event of a loss of power.
NEMA4 Enclosure
Approvals (SURE 24 Only)
A.C. Models Only
Canadian Standards Association
Enclosure 4
NEMA7 Enclosure
Approvals (SURE 24 Only)
A.C. Models Only
Canadian Standards Association
CSA NRTL/C—Class I, Divisions 1 & 2,
Groups C & D
CSA NRTL/C—Class II, Divisions 1 & 2,
Groups E, F & G
CSA NRTL/C—Approved to UL standard
No. 429, Electrically
Operated Valves
CSA NRTL/C—Approved to UL
Standard No. 1203,
Electrical Equipment for use
in Explosion - proof
And Dust - Ignition - proof
Hazardous(Classified)
Locations
Temperature Range
Standard: -40°F to +150°F
-40°C to +65°C
Optional: -60°F to +150°F
-50°C to +65°C
Optional:
Compliance to NFPA 130,
capable of operation after
exposure to ambient
temperature of 482°F (250°C)
for a minimum of 1 hour.
Voltage
115 VAC, 1 Phase, 50/60 Hz.
230 VAC, 1 Phase, 50/60 Hz.
Torque Range
300 pound inches spring end
(34 newton meters)
Speed Range
5 & 10 seconds for 90° revolution, motor operation
2 to 5 seconds,
spring operation
Spring
Flat, spring steel torsion
spring, XYLAN®coated
Standard Features
AC Voltages
2 – SPDT Switches, PTC
Heater, Motor Brake
SURE24
SURE25
115 & 230VAC,1 Phase,50/60 Hz.
Current Ratings Current Ratings
Model
Sure 25-5 300 (34) 5 seconds/90° 2 seconds/90° 50% 50%
SUREPOWR
Sure 25-10 300 (34) 10 seconds/90° 2 seconds/90° 50% 50%
Sure 24-10 300 (34) 10 seconds/90° 2 seconds/90° 25% 25%
Sure 49-5 600 (68) 5 seconds/90° 2 seconds/90° 25% 25%
Sure 49-15 600 (68) 15 seconds/90° 2 seconds/90° 25% 25%
Sure 49-30 600 (68) 30 seconds/90° 2 seconds/90° 50% 50%
Sure 100-10 1,200 (136) 10 seconds/90° 5 seconds/90° 25% 25%
Sure 100-30 1,200 (136) 30 seconds/90° 7 seconds/90° 50% 50%
* (N.L.A.) — No Load Ampere (L.R.A.) — Locked Rotor Ampere (1) — Open/Close Service (2) — Open/Close or Modulating Service
** (CF) — Consult Factory + — Approximate, Based on Load
Output Torque Electrical Speed of Spring Speed Duty Cycle Rating Duty Cycle Rating
Inch Pounds (N.m)
Operation —
(12 seconds/90°) (2) (2)
(12 seconds/90°) (1) (1)
(18 seconds/90°) (1) (1)
(35 seconds/90°) (2) (2)
(12 seconds/90°) (max) + (1) (1)
(35 seconds/90°) (max ) + (2) (2)
60Hz. (50Hz.)
(6 seconds/90°) (1) (1)
(6 seconds/90°) (1) (1)
of Operation
115 VAC 220 VAC
24VAC
Current Ratings
Model
Sure 49-30 600 (68) 30 seconds/90° 2 seconds/90° 25%
SUREPOWR
Output Torque Electrical Speed of Spring Speed Duty Cycle Rating
Inch Pounds (N.m)
Operation —
(35 seconds/90°) (2)
60Hz. (50Hz.)
of Operation
24 VAC
24 VAC
N.L.A.* L.R.A.*
4.50 5.00
115 VAC 220 VAC
N.L.A.* L.R.A.* N.L.A.* L.R.A.*
1.40 2.15 CF** CF**
1.00 1.55 CF** CF**
.70 1.05 .45 .65
1.10 1.80 1.00 1.20
.55 1.55 .35 .90
.65 .70 .30 .35
1.90 2.90 .90 1.35
.65 .95 .35 .45
12 & 24 VDC
Model
Sure 49-5 600 (68) 5 seconds/90° 2 seconds/90° 50% 50%
SUREPOWR
Limit Switches (Sure 24 & 25)
Standard: Two-single pole, double throw type (SPDT)
Limit Switches (24 VDC Models)
Ratings: UL and CSA listed.
MIL-PRF-8805 Qualified Listing
25 amp at 277 VAC; 1 H.P. at 125 VAC;
2 H.P. at 250 VAC
Isolation Relays
To operate multiple actuators in parallel from
a single signal requires isolating relays in the
field wiring. Consult factory.
Industrial Products Group
Dresser, Inc.
16240 Port Northwest Drive
Houston, Texas 77041-2645 USA
Ph:832.590.2306 Fax: 713.849.2879
Toll Free Phone:800.945.9898 Email:rcs@dresser.com,andco@dresser.com
Output Torque Electrical Speed Spring Speed Duty Cycle Rating Duty Cycle Rating
Inch Pounds (N.m)
of Operation of Operation
(6 seconds/90°) (1) (1)
115 VAC 230 VAC
Limit Switches (Sure 49 & 100)
with an option: for 2 or 4 additional
Standard: Four-single pole, double throw type
Ratings: UL and CSA listed.
Optional: All double pole, double throw type (DPDT).
Ratings: UL and CSA listed.
(SPDT) with an option: for 2 additional
15 amp & 1/2 H.P. at 125 or 250 VAC;
1/2 amp at 125 VDC; 1/4 amp at 250 VDC;
Lamp Load - 5 amp at 120 VAC
10 amp at 125/250 VAC (form ZZ);
1/2 H.P. at 125 VDC; 3/4 H.P. at 250 VAC
Heater
PTC (Positive Temperature Coefficient)
Heater Standard in all A. C. Voltage Models
Current Ratings Current Ratings
12 VDC 24 VDC
N.L.A.* L.R.A.* N.L.A.* L.R.A.*
1.00 22.00 1.00 12.30
Duty Cycle
The percentage of time the electric motor is
energized vs. the time it is at rest, in reversing
duty and with the actuator running at it’s rated
load - maximum published torque.
Standard Modulating Duty Rating
• 12 motor starts (corrections) per minute.
• At the rated duty cycle for that model.
• With the speed of operation a minimum
of 15 seconds for 90° or slower.
• With positioning accuracy of (+/-) 1% of
total span.
©2008 Dresser, Inc.
RCS Andco, and DRESSER are registered trademark(s) of Dresser, Inc.
www.dresser.com
Sure 24, 25
7.08
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