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Summary of Contents for Festo CPX-E-1CI
- Page 1 Counter module CPX-E-1CI Description | Func- tion | Parameterisation 8071187 8071187 2018-02 [8071189]...
- Page 2 Translation of the original instructions Festo — CPX-E-1CI — 2018-02...
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Page 3: Table Of Contents
Overview of parameters....................29 Parameters........................30 3.2.1 Signal type/encoder type..................30 3.2.2 Signal evaluation....................30 3.2.3 Monitoring of cable break..................31 3.2.4 Monitoring of tracking error..................31 3.2.5 Monitoring of zero pulse..................32 3.2.6 Pulses per zero pulse....................32 Festo — CPX-E-1CI — 2018-02... - Page 4 Load value......................35 3.2.13 Debounce time for digital inputs................36 3.2.14 Integration time for speed measurement............... 36 Process data inputs/outputs (PDI/PDO)................37 3.3.1 Process data inputs (PDI)..................37 3.3.2 Process data outputs (PDO)................... 38 Technical data......................39 Festo — CPX-E-1CI — 2018-02...
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Page 5: About This Document
The product version can be identified from the product labelling or with the help of appropriate soft- ware from Festo. Appropriate software for determining the product version can be found in the Festo Support Portal è www.festo.com/sp. Information on using the software can be found in the integrated Help function. -
Page 6: Product Labelling
About this document There may be an updated version of this document for these or later product versions. • Check whether a corresponding version of this document is available on the Festo Support Portal è www.festo.com/sp. Product labelling The product labelling is located on the left-hand side of the module. Scanning the printed Data Matrix Code with an appropriate device opens the Festo Support Portal, with the information appropriate for the product. -
Page 7: Specified Standards
è Tab. 26 Debounce time for digital inputs. The following encoder types can be used with the module: – Encoder 24 V DC (single ended) – Encoder 5 V DC (differential or single ended) Detailed information on the types of encoder that can be used è 2.6 Encoder. Festo — CPX-E-1CI — 2018-02... -
Page 8: Product Design
9 Status of input I0 [X0] (green) Fig. 3 Display components 2.1.3 Connecting components Connection [X0], [X1] Signal [X0] Signal [X1] Input I0 Input I2 Input I1 Input I3 +24 V DC input I0 +24 V DC input I2 Festo — CPX-E-1CI — 2018-02... -
Page 9: Counting
+5 V DC encoder supply 0 V DC encoder supply Functional earth FE Tab. 6 Connection X3 2.1.4 Counting Each pulse detected at the encoder input changes the counter value unless the counter is blocked by means of the “Block counter” function. Festo — CPX-E-1CI — 2018-02... - Page 10 Zählimpulse Statusbit Zählrichtung Steuerbit Zähler sperren Statusbit Zähler gesperrt Statusbit Obere ZG Statusbit Untere ZG Steuerbit Überlauf ZG Obere Zählgrenze Zählerwert Untere Zählgrenze Zeit Fig. 4 Counting Festo — CPX-E-1CI — 2018-02...
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Page 11: Initialisation
The value saved in the “Load value” parameter is also adopted as the counter value when the counter is blocked. The following sources can be referred to when using the “Set counter” function: – Input I2 – Zero pulse Festo — CPX-E-1CI — 2018-02... -
Page 12: Setting The Counter Using Input I2
“Enable setting zero” (è Tab. 29 Process data outputs (PDO)) control bit. If this function is enabled, the counter value is set to the load value again for every zero pulse of the encoder. Festo — CPX-E-1CI — 2018-02... -
Page 13: Setting The Counter Using Process Data
The load value is adopted as counter value once by means of a rising edge of the “Set counter” control bit. The adoption of the counter value is signalled using the “Set counter” status bit. After resetting the “Set counter” control bit, the “Counter set” status bit is reset once more. Festo — CPX-E-1CI — 2018-02... -
Page 14: Block Counter" Function
An active block of the counter using input I3 is signalled using the “Status DI3” status bit (è Tab. 28 Process data inputs (PDI)). If the counter block is cancelled (input I3 is not set), counting continues from the current counter value. Festo — CPX-E-1CI — 2018-02... -
Page 15: Blocking The Counter Using Process Data
If the counter block is cancelled (“Block counter” control bit is not set), counting continues from the current counter value. Zählimpulse Steuerbit Zähler sperren Statusbit Zähler gesperrt Obere Zählgrenze Zählerwert Ladewert Untere Zählgrenze Zeit Fig. 10 Blocking the counter using process data Festo — CPX-E-1CI — 2018-02... -
Page 16: Latching" Function
The image below shows, by way of example, the signal characteristics for latching with the following parameter settings: • Latching signal = digital signal I0 • Latching event = rising edge • Latching response = load value Festo — CPX-E-1CI — 2018-02... -
Page 17: Latching On Rising Edge
Latching on rising edge The image below shows, by way of example, the signal characteristics for latching with the parameter settings “Latching event = rising edge” (è Tab. 21 Latching event) and “Latching response = Festo — CPX-E-1CI — 2018-02... -
Page 18: Latching On Falling Edge
“Latching event = falling edge” (è Tab. 21 Latching event) and “Latching response = continuous” (è Tab. 22 Latching response), where latching is not blocked either by input I1 or by the “Block latching” control bit. Festo — CPX-E-1CI — 2018-02... -
Page 19: Latching On Rising And Falling Edge
“Latching event = rising and falling edge” (è Tab. 21 Latching event) and “Latching response = continuous” (è Tab. 22 Latching response), where latching is not blocked either by input I1 or by the “Block latching” control bit. Festo — CPX-E-1CI — 2018-02... -
Page 20: Speed Measurement" Function
The value determined for speed measurement is the sum of encoder pulses recorded within the set integration time and can be converted into an actual speed by taking the resolution and time into con- sideration. Festo — CPX-E-1CI — 2018-02... -
Page 21: Encoder
The speed is also determined with a blocked counter. Zählimpulse Statusbit Zählrichtung Steuerbit Geschwindigkeits- messung Statusbit Geschwindigkeits- messung Integrationszeit Zählerwert/ Geschwindigkeit Zeit Fig. 15 Speed measurement Encoder 2.6.1 Suitable encoder types The following encoder types can be used with the module: Festo — CPX-E-1CI — 2018-02... -
Page 22: Encoder Signal Characteristic (Examples)
The zero signal (track 0) can, for example, be used with rotary encoders to count the revolutions of the encoder. Spur A 360° 360° Spur B 90° 270° Spur 0 1 Umdrehung 1 Umdrehung Fig. 16 Incremental encoder Pulse generator with direction signal Festo — CPX-E-1CI — 2018-02... -
Page 23: Encoder Diagnostics
If the input signal is exceeded, an error is detected. As soon as the input frequency exceeds a limit within a specific timeframe, a module error is signalled. Monitoring of zero pulse Festo — CPX-E-1CI — 2018-02... -
Page 24: Signal Evaluation
In single evaluation of the encoder signals, only one edge of track A is evaluated per period. – Forward counting pulses are detected with positive edge at track A and low level at track B. – Backward counting pulses are detected with negative edge at track A and low level at track B. Festo — CPX-E-1CI — 2018-02... - Page 25 Quadruple evaluation In quadruple evaluation of the encoder signals, the positive and negative edges of tracks A and B are evaluated. Here, the level of both tracks determines whether forward or backward counting pulses are generated. Festo — CPX-E-1CI — 2018-02...
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Page 26: Diagnostics
Bewegungsrichtung Spur A Spur B Zählimpulse Statusbit Zählrichtung Fig. 21 Pulse and direction Diagnostics Various options are available for diagnosing errors: – Internal system diagnostics – LED indicators on the product Festo — CPX-E-1CI — 2018-02... - Page 27 Status of input I0 … I3 [X0], [X1] Significance Remedy (green) – Input active (logic 1) 1 signal at input – Input inactive (logic 0) 0 signal at input Tab. 8 Status of input I0 ... I3 [X0], [X1] Festo — CPX-E-1CI — 2018-02...
- Page 28 Normal operation of encoder supply [X3] Significance Remedy (green) – Encoder supply in normal operation – Error in encoder supply Tab. 12 Error in encoder supply [X3]) or è module not initialised Tab. 11 Normal operation of encoder supply [X3] Festo — CPX-E-1CI — 2018-02...
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Page 29: Parameterisation
è Lower count limit 4828 + 64 x m + 20 23 Tab. 24 Lower count limit … è Load value 4828 + 64 x m + 24 27 Tab. 25 Load value … è Festo — CPX-E-1CI — 2018-02... -
Page 30: Parameters
Description of automation system CPX-E); m = module number (counted from left to right, starting from 0) 2) A parameterisation error (error number 29) is triggered. Tab. 14 Signal type/encoder type 3.2.2 Signal evaluation The “Signal evaluation” parameter defines the encoder type and evaluation. Festo — CPX-E-1CI — 2018-02... -
Page 31: Monitoring Of Cable Break
The “Monitoring of tracking error” parameter defines whether a diagnostic message should be output when a tracking error is detected. The “Monitoring of cable break” parameter is only relevant for encoders with tracks A and B offset in phase. Festo — CPX-E-1CI — 2018-02... -
Page 32: Monitoring Of Zero Pulse
The “Pulses per zero pulse” parameter is only relevant for encoders with zero track (track 0) and is required for zero pulse monitoring via the “Monitoring of zero pulse” parameter è Tab. 18 Monitoring of zero pulse. Festo — CPX-E-1CI — 2018-02... -
Page 33: Latching Signal
è Function number ( Description of automation system CPX-E); m = module number (counted from left to right, starting from 0) 2) A parameterisation error (error number 29) is triggered. Tab. 21 Latching event Festo — CPX-E-1CI — 2018-02... -
Page 34: Latching Response
The “Lower count limit” parameter defines the lower count limit in the value range 0 ... 4,294,967,295 – 1). If the value set for the lower count limit is higher than the current counter value, the counter value is increased to the set count limit. Festo — CPX-E-1CI — 2018-02... -
Page 35: Load Value
… (presetting = 0) + 25 + 26 + 27 è Function number ( Description of automation system CPX-E); m = module number (counted from left to right, starting from 0) Tab. 25 Load value Festo — CPX-E-1CI — 2018-02... -
Page 36: Debounce Time For Digital Inputs
Function number ( Description of automation system CPX-E); m = module number (counted from left to right, starting from 0) 2) A parameterisation error (error number 29) is triggered. Tab. 27 Integration time for speed measurement Festo — CPX-E-1CI — 2018-02... -
Page 37: Process Data Inputs/Outputs (Pdi/Pdo)
– occurred (1 = occurred) Latching blocked latching blocked via – “Block latching” control bit (1 = blocked, 0 = active) Lower CL lower count limit exceeded (1 – = exceeded) Festo — CPX-E-1CI — 2018-02... -
Page 38: Process Data Outputs (Pdo)
– counter value via zero pulse (1 = enabled) Set counter setting the counter to the – load value (1 = set) Block counter switch counter to inact- – ive (1 = block) Festo — CPX-E-1CI — 2018-02... -
Page 39: Technical Data
Ambient temperature [°C] –5 +60 (–5 +50) … … Storage temperature [°C] –20 +70 … Air humidity 0 95 … (non-condensing) Assigned address [bytes] 12/2 space (inputs/outputs) Degree of protection in IP20 accordance with EN 60529 Festo — CPX-E-1CI — 2018-02... - Page 40 24 V from U EL/SEN Reverse polarity pro- tection Encoder supply [V DC] 5 5 % / 24 25 % ± ± 5 V DC / 24 V DC Continuous nominal [mA] current of encoder sup- Short circuit protection of encoder supply Festo — CPX-E-1CI — 2018-02...
- Page 41 Max. input frequency of encoder signals Differential [MHz] Single ended [kHz] Max. debounce time of encoder inputs Differential [ns] Single ended [µs] 1) Dependent on the connection type of the encoder, "differential" or "single ended" Tab. 32 Encoder inputs Festo — CPX-E-1CI — 2018-02...
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