Product Instructions Position Feedback Cylinder LRT Controller Manual Please read this manual carefully The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under actual operating conditions. Bimba reserves the right to change specifications without prior notice. Bimba Manufacturing Company Monee, IL 60449-0068 Telephone: 708.534.8544 Email: cs@bimba.com www.bimba.com Rev Level: 0 Leaders in Actuation.
Table of Contents I. General Information................................................................................................................... Page 3 II. Relay Operation........................................................................................................................ Page 3 A. Standard Installation......................................................................................................... Page 4 B. Operating Mode Configurations.................................
I. GENERAL INFORMATION The control unit uses position feedback information provided by the position sensor installed within a PFC cylinder to direct its output action(s). The position sensor is basically a linear potentiometer. When a DC potential is applied, a voltage relative to piston position is created. This voltage provides the necessary information for system operation. There are six different controllers available (see FIGURE 1).
A. Standard Installation Standard electrical hookup for each dual output unit is illustrated in FIGURE 2. Wire Colors Wires 6" Leads 3 Pin Connector PFC Input Red Blue PFC Output White Brown PFC Ground Black Black FIGURE 2 PIN LAYOUT The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under actual operating conditions. Bimba reserves the right to change specifications without prior notice.
Standard electrical hookup produces standard output operation. FIGURE 3 illustrates ideal voltage output versus cylinder travel and the corresponding output actions. Notice that the analog output is minimum when the cylinder is fully retracted and increases as the cylinder is extended. This is standard output action. For an in-depth discussion of the effects that Jumper J1 (Latching Jumper) has on the output operation, refer to Section II B of this manual.
B. Operating Mode Configurations 1. Independent Relay Mode The standard operation of a dual output unit is the Independent Relay Mode. a. Non-Inverted Operation To implement - install load to Normally Open (NO) side of the relays. Terminal 10 for Relay 1 and Terminal 13 for Relay 2. Terminal configuration is shown in FIGURE 2.
JP1 Relay Output 1 2 3 1 2 3 Position B CONTINUOUSLY CYCLE MODE Position A INDEPENDENT RELAY MODE FIGURE 4 OPERATING MODE SELECTION 2. Continuous Cycle Mode To activate the Continuous Cycle Mode, move Jumper 1 to Position B (See FIGURE 4). This enables the Continuous Cycle Mode and disables the Independent Relay Mode. As one output turns on, the other turns off and vice-versa (See FIGURE 3). This mode of operation allows for continuous cycling of a cylinder between two adjustable limits.
C. Setting the Switch Points of Output At this point make sure all electrical connections have been made properly and apply power to the controller. Each controller has the same controls and used the same set-up procedure. To set the output 1 switch point: 1. 2. 3. 4. Turn Set Point potentiometer 1 (Set 1) fully counterclockwise. Move the piston to the position where output 1 should switch on and off. Observe Set Point 1 LED.
For some applications it may be desirable to reverse this operation and have maximum analog output at minimum extension and minimum output at maximum extension. This can be achieved by switching the wires at Terminals 3 and 5 of the control unit as shown before in FIGURE 2. The resulting output action is opposite from standard (FIGURE 6). FIGURE 7 illustrates this reversed output action. FIGURE 7 REVERSED ANALOG OUTPUT B.
OUTPUT BOUNDARIES ANALOG OUTPUT VOLTS 50% CYLINDER TRAVEL (IN.) 1. 2. 3. Minimum Maximum Output Output Output “Gain” “Offset” Point 0" 12" 12" 2" 10" 8" 5" 11" 6" Minimum Gain FIGURE 10 ACCEPTABLE OUTPUT The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under actual operating conditions. Bimba reserves the right to change specifications without prior notice.
OUTPUT BOUNDARIES ANALOG OUTPUT VOLTS CYLINDER TRAVEL (IN.) 1. 2. 3. Minimum Maximum Output Output Output “Gain” “Offset” Point 2" 7" 5" Less than allowable 4" 8" 4" Never 4" Reached FIGURE 11 UNACCEPTABLE ANALOG OUTPUT The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under actual operating conditions. Bimba reserves the right to change specifications without prior notice.
The setting of output boundaries is accomplished by adjusting the potentiometers offset and gain (refer to FIGURE 2). FIGURE 12 SET POINT ADJUSTMENT Each adjustment affects the output in a different way. The offset adjustment is used to set the minimum analog output point. When adjusted, it shifts the entire output response range. FIGURE 13 illustrates the effect of adjusting the offset potentiometer. Notice how the offset changes but the “gain” remains the same.
C. Setting Scalable Output The procedure used to set the two boundaries is as follows: 1. Setting the Offset (minimum output point) a. Move the piston to the minimum output wanted. b. On 0-10 VDC Controllers: Place a voltmeter across Terminal 6 (Analog Out) and 7 (Analog GND). On 4-20 mA Output Controllers: Place an ammeter in series with the load to be driven. Current sources from Terminal 6 (Analog Out) and returns to Terminal 7 (Analog GND). c.
V. SYSTEM SPECIFICATIONS AUXILIARY POWER REQUIREMENT: AC MODELS.......................................................................................100 TO 135 VAC (115 VAC INPUT) 200 TO 270 VAC (230 VAC INPUT) DC MODELS ...................................................................................11.8 TO 26 VDC (12/24 VDC INPUT) POWER REQUIREMENT: AC MODELS............................................................................ 5 VA MAXIMUM (120 TO 230 VAC) DC MODELS ..................
Position Feedback Control Module Unless noted otherwise: Ambient Temperature = (25° C) 77° F Nominal Aux. Power (AC Models) = 120 VAC, 60 HZ Aux. Power (DC Models) = 24 VDC Relay Outputs Control Limit Set Point Range...............................2 independent adjustments settable from 0 to 100% of cylinder stroke Temperature Influence on Control Limits........................................................................±0.01% stroke/°C (-30° C to +70° C) Output Contact Ratings...........................
VI. APPLICATIONS A. Single-Solenoid Two-Position Valve DESIRED RESULTS: A cylinder/system that will cycle between two adjustable limits. EQUIPMENT: Single Solenoid (12 VDC) 2-position valve Bimba Controller (Continuous Cycle Mode) 10" Stroke cylinder (any bore) FIGURE 15 FIGURE 15 illustrates a typical pneumatic operating system. Movement of the 10" cylinder is controlled by the single solenoid two-position valve. When the solenoid is energized, the cylinder will retract.
FIGURE 16 By using the Continuous Cycle Mode of the controller, a continuous cycling process can be obtained. The N.O. contact of Relay 1 is the only output necessary for cycling. The control potentiometers are used for setting the inner and outer limits of the stroke. At each limit the cylinder will reverse direction and move toward the other limit. This process will continue indefinitely until interrupted.
B. Manual Control Using a Three-Position Valve DESIRED RESULTS: A cylinder/system that is manually operated between two adjustable limits. EQUIPMENT: Double Solenoid (24 VDC) 3-position valve Bimba Controller (Independent Relay Mode) 16" cylinder (any bore) FIGURE 17 FIGURE 17 illustrates the internal connections of typical pneumatic applications. Movement of the cylinder is controlled by the double solenoid three-position valve in conjunction with the manual push button switches.
FIGURE 18 When the cylinder is fully retracted, Relay 2 is turned on. Pushing the manual extend push button will cause the cylinder to extend until it reaches the set point (14"). At this time, Relay 2 will turn off and motion will cease. Relay 1 will be on and depressing the retract switch will cause the cylinder to retract until Relay 1 turns off at 4". When Relay 1 turns off, motion will cease and the process can be repeated whenever desired.
C. Continuous Cycling Between Two Adjustment Limits DESIRED RESULTS: A cylinder/stream that will cycle between two adjustable limits. OPERATING SITUATION EQUIPMENT: 3-position valve DC solenoids (2 amp max.) Bimba Controller (using the Continuous Cycle Mode) and the inverted mode on relay 12" cylinder (any bore) FIGURE 19 FIGURE 19 illustrates a typical pneumatic application. In this application, cylinder will continually cycle between boundaries of 2" and 10" of overall cylinder stroke.
FIGURE 20 By using the Continuous Cycle Mode of the controller, the cylinder will continually cycle between the two set point limits. In this case, there will be 8" of piston travel in each direction to perform the desired task. FIGURE 20 illustrates the output actions and the ideal voltage output versus piston travel (seen at Terminals 6 and 7). Control potentiometer 1 is used to set the inner limit (2") and control potentiometer 2 is used to set the outer limit (10").
D. Two-speed System Using Two Bimba Controllers DESIRED RESULTS: A cylinder/system that operates at two different speeds. It is desired to have highspeed movement between 2 and 6 inches of the stroke. It is also desired to have the motion slow down for low-speed operation between 1 and 2, and 6 and 7 inches. OPERATING SITUATION EQUIPMENT: 2 three-position valves DC solenoids (12 VDC 2 AMP max.
FIGURE 22 FIGURE 22 shows the condition of the output relays during cylinder movement. The cylinder extends with both relays 2 and 4 on and solenoid 2 and 4 energized. At 6 inches solenoid 2 turns off, removing the high speed source from the cylinder. The pressure coming from valve 2 is reduced, therefore, the cylinder moves slower between 6 inches and 7 inches. Solenoid 4 remains on until the cylinder reaches 7 inches where it stops.
