Trigger I/O Board for the LogiComm Gun Driver

Transcription

1 Instruction Sheet Trigger I/O Board for the LogiComm Gun Driver P/N A WARNING: This trigger I/O board is not directly compatible with the previous versions (P/N s and ). Refer to the connection diagrams in this document for the correct wiring information. Overview The trigger input/output board has been upgraded, this new board is more versatile than the previous board, since it is fully floating without any connection to circuit common or chassis in the LogiComm Gun Driver. Each trigger input is separate from the other three trigger inputs. This means, different channels could be driven from separate sources. Since all inputs are separate, the inputs can be connected to either sourcing or sinking outputs. Both types of drivers can be mixed within one system. As before, the trigger input/output board accepts a wide range of voltages and is less sensitive to wiring polarity. Both the Terminal Block version and the Connector version use the same underlying circuitry, the only difference is in the connection style. NOTE: The improved board pin-out is incompatible with the previous connector pin-out. Wiring changes are required when replacing an older-style board. Intended Use This trigger I/O board can be used for several purposes. The following are typical uses: Replace a damaged isolated assembly Upgrade from an earlier Trigger I/O design Eliminate adapters when used with the EPC series pattern controls Interface with PLCs and PLSs 2008 Nordson Corporation

2 2 Trigger I/O Board for the LogiComm Gun Driver Terminal Block Input Pin-out Pin Number Label Function 1 +24V 24 volt supply 2 In A Trigger input (isolated, non-polarized) 3 In B Trigger input (isolated, non-polarized) 4 COM Circuit common (connected to chassis) DIN Connector Input Pin-out CAUTION: The circular DIN connector pinout is not intuitive. Make sure of the pin numbering before making connections. Pin Number Label Function 1 N/C No connection 2 In A Trigger input (isolated, non-polarized) 3 +24V 24 volt supply 4 COM Circuit common (connected to chassis) 5 In B Trigger input (isolated, non-polarized) Input Information CAUTION: The specified operation is over an input voltage range of VDC. Damage can occur above 35V; it may work on as little as 4 VDC. The two signal input pins are not sensitive to voltage polarity. The input requires current flow and draws approximately 8.3mA (max). However, it may work on as little as 2 ma. Leakage or trickle currents can cause problems. Such currents may arise from snubber components or poor switches. The typical symptom of this problem is inputs that remain actuated all the time. If this is suspected as a problem, perform one of the following: Measure the current by inserting a digital multi-meter (DMM) in series with the input. or Measure the voltage across a 100 ohm resistor placed in series with the input; then the measured current (in ma) is 10 x V Nordson Corporation

3 Trigger I/O Board for the LogiComm Gun Driver 3 Avoid Paralleling the Trigger Inputs with any Other Circuit CAUTION: Do not try to drive the gun driver trigger input and other inputs in parallel from a single output. The input circuit of various devices can be incompatible. Using one output to drive paralleled inputs can prevent operation or cause unreliable operation. Avoid Using Mechanical Relays Mechanical relays are NOT recommended for the following reasons: Mechanical relays have contact bounce. The gun driver is fast enough to react to the bouncing inputs and will cause multiple switching as the relay opens and closes. This can result in a poor pattern. Mechanical relays have a limited switching life and will wear out. NOTE: The only situation that might warrant mechanical relays is for very slow and non-critical applications. Even then, the limited life of the relay will be a future liability. If other relays or trigger interfacing functionality is required, use solid-state relays (SSRs) instead. Using the Trigger I/O Board with EPC Series Pattern Controllers The trigger I/O board may be used in several ways with the EPC series controllers. To replace the trigger I/O board, use one of the following methods: New Installation The LogiComm gun driver with the new trigger board can interface directly to the EPC series pattern controllers without the EPC adapters previously required. Replacement If replacing an old trigger board in a system using EPC adapters, use one of the following choices: - Remove the EPC adapters and rewire directly (recommended). or - Leave the EPC adapters in place (not recommended) Nordson Corporation

4 4 Trigger I/O Board for the LogiComm Gun Driver Wiring Diagrams and Table New and Replacement For both new installation and replacement situations where the EPC adapters are removed, wire the gun outputs to trigger inputs (TB pins 2 and 3 or Circular DIN pins 2 and 5). For connections, see the following figure or refer to the table below: Figure 1 Connections for new installation and replacement EPC Function Wire Function Gun Driver TB Gun Driver Circ DIN Gun Driver Function Gun 1 + Chan 1 + X1A 3 X1B 5 Trigger In1B Gun 1 switched Chan 1 switched X1A 2 X1B 2 Trigger In1A Gun 2 + Chan 2 + X2A 3 X2B 5 Trigger In2B Gun 2 switched Chan 2 switched X2A 2 X2B 2 Trigger In2A Gun 3 + Chan 3 + X3A 3 X3B 5 Trigger In3B Gun 3 switched Chan 3 switched X3A 2 X3B 2 Trigger In3A Gun 4 + Chan 4 + X4A 3 X4B 5 Trigger In4B Gun 4 switched Chan 4 switched X4A 2 X4B 2 Trigger In4A 2008 Nordson Corporation

5 Trigger I/O Board for the LogiComm Gun Driver 5 Replacement NOTE: Although not recommended, the EPC adapters can be left in place for a replacement situation. The pattern control outputs are probably wired to TB pins 1 and 2. Add a wire jumper from the other side of the trigger input to circuit common (TB pin 3 and pin 4). For connections, see the following figure or refer to the table below: Figure 2 Connections for replacement EPC Function Adapter TB Wire Function Gun Driver TB Gun Driver Circ DIN Gun Driver Function Gun 1 + X1 1 Chan 1 + X1A 1 X1B 3 + Gun 1 switched X1 2 Chan 1 X1A 2 X1B 2 Trigger in 1A switched None Jumper X1A 3 to 4 X1A 5 to 4 Trigger in 1B to common Gun 2 + X1 3 Chan 2 + X2A 1 X2B 3 + Gun 2 switched X1 4 Chan 2 switched X2A 2 X2B 2 Trigger in 2A None Jumper X2A 3 to 4 X2A 5 to 4 Trigger in 2B to common Gun 3 + X1 5 Chan 3 + X3A 1 X3B 3 + Gun 3 switched X1 6 Chan 3 switched X3A 2 X3B 2 Trigger in 3A None Jumper X3A 3 to 4 X3A 5 to 4 Trigger in 3B to common Gun 4 + X1 7 Chan 4 + X4A 1 X4B 3 + Gun 4 switched X1 8 Chan 4 X4A 2 X4B 2 Trigger in4 switched None Jumper X4A 3 to 4 X4A 5 to 4 Trigger in 4B to common 2008 Nordson Corporation

6 6 Trigger I/O Board for the LogiComm Gun Driver Powering an EPC Series Pattern Control from the LogiComm 24V Supply It is possible to supply 24 VDC to the EPC series pattern control to eliminate the need for an external power supply such as the PS-40. When power is supplied to the trigger I/O board through the ribbon cable from the CPU, the current is limited to 0.5 Amps. However, by moving the 6 wire power harness from the CPU board X7 to the trigger I/O board X7, approximately 2 Amps is available from the trigger connectors. The following table shows where power is available from the trigger board: Voltage Trigger TB Position Trigger Circ DIN Position +24VDC 1 3 COM 4 4 Connecting the LA404-2 Pattern Control Wire Function LA404-2 Channel Out Connector Position Connect the LA404-2 pattern controller to the trigger I/O board as follows: Gun Driver Trigger TB Gun Driver Circ Trigger DIN Trigger Function Gun 1+ 1 X1A 2 X1B 2 Trigger In1A Gun 1 3 X1A 3 X1B 5 Trigger In1B Gun 2+ 1 X2A 2 X2B 2 Trigger In2A Gun 2 3 X2A 3 X2B 5 Trigger In2B Gun 3+ 1 X3A 2 X3B 2 Trigger In3A Gun 3 3 X3A 3 X3B 5 Trigger In3B Gun 4+ 1 X4A 2 X4B 2 Trigger In4A Gun 4 3 X4A 3 X4B 5 Trigger In4B NOTE: These connections assume there is a one to one mapping from gun outputs to trigger inputs Nordson Corporation

7 Trigger I/O Board for the LogiComm Gun Driver 7 Connecting the LA404 Pattern Control Wire Function The LA404 output was designed to drive coils and can output a 48V spike. Without precautions, the spike voltage will damage the input circuit. To avoid this, program as follows: LA404 Channel Out Connector Position Set all channel spike times to zero (0.0ms) to turn off the spike Set all channel hold voltages to 10V Connect the LA404 pattern controller to the trigger I/O board as follows: Gun Driver Trigger TB Gun Driver Trigger Circ DIN Gun Driver Function Gun 1+ 1 X1A 2 X1B 2 Trigger In1A Gun 1 2 X1A 3 X1B 5 Trigger In1B Gun 2+ 1 X2A 2 X2B 2 Trigger In2A Gun 2 2 X2A 3 X2B 5 Trigger In2B Gun 3+ 1 X3A 2 X3B 2 Trigger In3A Gun 3 2 X3A 3 X3B 5 Trigger In3B Gun 4+ 1 X4A 2 X4B 2 Trigger In4A Gun 4 2 X4A 3 X4B 5 Trigger In4B NOTE: This new version eliminates the need for special wiring and can work with more than one trigger Nordson Corporation

8 8 Trigger I/O Board for the LogiComm Gun Driver Devices Using Opto22-style Output Modules Typical examples of devices using this type of output are: Nordson PC-50 series Programmable Limit Switches (PLS) Usually these devices have multiple outputs with a single common terminal. The common can be tied to either +24V or circuit common (circuit ground ). The supply voltage can originate in the driving device, from an external supply, or from the LogiComm Gun Driver. The output modules are switches, therefore use the DC output types for best results. The AC output modules may have snubbers which can allow leakage currents. The trigger inputs are isolated. There are many ways to connect the output to the trigger input. All that is necessary is for current: To flow: from a source through an output/switch module through a trigger input circuit and back to the same source Or flow: from a source through a trigger input circuit through an output/switch module and back to the same source NOTE: Make sure of the polarity of the wiring at the output module. Often the modules have a protection diode across the output for reverse polarity protection. This diode limits the damage to the module that occurs if it is connected backwards, but it actuates the trigger input continuously due to the current path through the protective diode Nordson Corporation

9 Trigger I/O Board for the LogiComm Gun Driver 9 Special Application: Connecting to the MPC Controller To drive the gun driver from an MPC controller, do the following: Set the MPC hold voltage to 10 VDC Set the MPC peak or spike time to minimum (0.1 msec) Connect MPC channel outputs to the LogiComm Gun Driver trigger inputs as shown below: Function MPC Output Connector Pin Gun Driver Trigger Terminal Block Position Gun Driver Trigger DIN Connector Pin Gun out (+/pos) Output Com ( /neg) Nordson Corporation

10 10 Trigger I/O Board for the LogiComm Gun Driver Special Application: Continuous Bead with Gap Skipping CAUTION: For safety purposes an additional method should be used to prevent gun actuation when the line is stopped. Add another device in series with the gap detector, and in series with the guns or the unit AC power input. To apply a continuous bead except in gaps, see the following wiring diagram: Figure 3 Continuous bead application except in gaps Issued 02/08 Original copyright date Nordson and the Nordson logo are registered trademarks of Nordson Corporation Nordson Corporation