McCANNA Actuation Systems |
17710-B |
Ramcon Series 8/25 C/CR, 50/100 B/BR, 250/500 B/BR
Electric Actuators
Installation, Operation and Maintenance Instructions
Contents
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Repairs – Warranty Terms and Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Illustrations
Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
8C-25C Unidirectional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8CR-25CR Reversible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
50BR-100BR Reversible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
250BR-500BR Reversible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Flow Control Division
McCANNA Actuation Systems
Storage |
Mechanical |
If the actuator is not to be installed as soon as received, heated indoor electrical instrument storage conditions must be provided. The actuator and any auxiliary equipment should be protected from corrosive materials and atmosphere, flooding, and dirty conditions. Conduit openings should be plugged and must not be subjected to rain, snow or water hosing. Storage must be in a place where other materials will not be placed or dropped on the actuator.
Installation
Installation of this actuator in applications where life-threatening conditions can be expected must include adequate monitoring/warning, interlock, and/or redundant control equipment.
Electrical
A.The wiring and conduits must be installed in accordance with all local codes and consistent with good practice for electrical work.
B.In hazardous areas the conduit seals required must be locally installed. No conduit seal is provided in the actuator.
C.If the actuator case is used as a splice box, the cover must be kept in place except when actually wiring or making adjustments. When replacing the cover all wires must be clear of pinch and scrape points and, if gasketed, proper gasket positioning must be observed.
D.Each actuator must have its own control switch. Do not operate in parallel with another actuator or other equipment.
E.Required and optional electrical connections are shown on the wiring schematic(s) supplied with the actuator (located either on the motor O.D. close to terminal block or inside of the housing) and also shown on page 3.
CAUTION: The typical wiring schematics shown may not show all wiring for actuators with optional features and must not be used as the basis for final wiring.
Single-phase AC actuator: (Verify that the nameplate voltage is the same as the AC supply voltage.) Connect actuator leads to the AC line as shown on the wiring schematic.
DC actuator: (Verify that the supply voltage matches the nameplate voltage.) The actuator rotation depends upon polarity at the terminals and it is essential that the polarity of connections be as shown on the wiring schematic supplied with the actuator.
A.The valve or other load to be driven must be free of obstructions and must turn freely throughout its entire operating range.
B.If mechanical stops are a part of the equipment, adjustment of these stops is necessary to avoid contact during normal operation. Limit switch must stop motor before mechanical stops are contacted.
C.If the actuator is to be field-mounted be sure that it is positioned so that the operating range is compatible with the load; i.e., if load is at its extreme clockwise position the actuator output shaft must also be at the same clockwise limit.
D.When positioning the actuator for a direct in-line connection to a valve, the two shaft centerlines must coincide to assure proper operation and to avoid excessive side loading of either shaft. A coupling with cross slots will provide some compensation for small misalignment. Position so that there is not axial loading of either shaft at any point of travel.
E.If connection is other than direct coupling, the linkages used must operate freely and must be clear of all obstructions throughout the complete travel range.
F.Unless specifically required to make other adjustments, the actuator shaft travel for standard units will be clockwise when viewed from the motor and cam side, or counter-clockwise when viewed from the mounting flange side of the actuator with the yellow and red circuit energized. The same is true for DC actuators with polarity connection as shown on the wiring schematic. Reversible actuators (standard configurations) will rotate counter-clockwise, motor and cam end, when the yellow and black leads are energized.
G.If adjustments are required, cam settings can be changed. (See figures 1, 2, 3, and 4)
Maintenance
Maintenance recommendations given are for the typical or average installation conditions. In severe installation conditions including items such as corrosives, extremes of heat and cold, humidity, etc., and where the potential for dangerous or life-threatening conditions in case of malfunction exist, more frequent and thorough maintenance procedures will be required. Local conditions and procedures must be used to determine an appropriate inspection and/or maintenance program.
The McCANNA Ramcon electric actuator is completely enclosed by a rugged housing designed to resist the most frequently encountered installation atmospheres, and contains a closed, grease-filled gear train. All standard AC motors are brushless induction types with no commutators or brushes to wear or get dirty. For many installations no formal or only minimum maintenance procedures will be required.
2 |
17710-B |
Flow Control Division
McCANNA Actuation Systems
NOTE: Series 23 includes models 8C, 8CR, 25C and 25CR. Series 14 includes models 50B, 50BR, 100B and 100BR. Series 16 includes models 250BR and 500BR
17710-B |
3 |
Loading...