Switchmax^® Wiring Examples

CT70300 Assembly Specifications

CT70520/21/22…Assembly Specifications

Relay-style switches offer many benefits to the user. They have no voltage drop when closed nor do they have leakage current when open. In most applications the Normally Open (N/O) connection is used so that when the cores reach set or pull, the relay contacts close to give that indication to the press. In most cases, the Normally Closed (N/C) connection is not used, but is available for use as part of PFA’s SWITCHMAX^® Mold Wiring solution.

Connection between the KOR-LOK^® Side-Action System and the press, is as simple as connecting two set sensor wires and two pull sensor wires to the two pair of machine control wires. The order of connection for each pair is not important.

Multiple set sensors may be wired in series to provide a single set indication to the press. Similarly, the pull wires may be connected in series. For situations where a core or other part of the mold may be damaged if opened with cores set, it is recommended that a redundant sensor be placed on the core itself and wired in series with the main unit sensors to ensure the core is retracted prior to mold opening.

EE70600/CT70600 Assembly

Figures show the PNP sensor and typical cable with flying leads. Manual wiring of these sensors in series is a challenge. When using SWITCHMAX^® sensors are easily connected in series, including LED light indication for each sensor.

CT70600 Assembly Specifications

Low Profile PNP sensors offer benefits to the user when fitting The KOR-LOK unit into demandingly small applications or when Integrating with other actuators using similar PNP sensor logic. PFA’s PNP option has a low voltage drop, typically allowing multiple sensors to be connected together to facilitate a single input to the machine control. Sensor integration is easily accomplished with PFA’s SWITCHMAX^® connectivity solution with PNP designated splitter cables.

In a generic application the Normally Open Sensor is paired with an individual cable to provide power and route the signal. To use the sensors individually, Power +24VDC (Brown wire) and Neutral 0 VDC (Blue wire) is required, as well as some method of integrating the sensor signal (Black wire) to the press. Various schemes are used to accomplish this task for molds with multiple cylinders, however, PFA recommends SWITCHMAX^® to provide a plug and play serial connection of sensors into single inputs for set and pull, while also providing operator side indication and troubleshooting capability.

While proper indication is expected, PFA cautions that for situations where a core or other part of the mold may be damaged if opened with cores set, it is recommended that a redundant sensor be placed on the core itself and wired in series with the main unit sensors to ensure the core is retracted prior to mold opening.