Edwards 300-BT Installation Instructions

Installation Position the switch and actuator so the labels are reading in the same direction Mount the switch on the stationary frame of the machine and mount the actuator on the moveable guard door or gate Keep the switch and actuator within the listed sense range See Figure 1 and Figure 2 for recommended mounting con Mounting on a ferrous material will e the sense range a minimum of 50 However a 1 4 non ferrous spacer positioned under the actuator and or switch should restore most of the lost sense range For best protection against operator defeat mount with non removable screws bolts or nuts see Accessories CAUTION When not used with a INT safety relay particular care must be taken to determine the actual load of the switch circuit High voltage transients from coils motors contactors and solenoids must be considered Transient protection such as back to back zener diodes TransZorb or an RC network is recommended for such loads to ensure that maximum ratings of the switch are not exceeded Not recommended to be used with tungsten loads because of high current inrush surges Line capacitance and load capacitance must be considered Excessive line capaci tance can be caused by cable lengths over 50 when using a maximum 48 VAC A resistor can be added in series to limit the inrush current at least 48 Ohms for 24V applications The resistor can be added in series just before the load The voltage drop and the power rating of the resistor must be considered Voltage drop I Watts I2R I maximum continuous current of the load When mounting the switch on an ungrounded machine ground the switch housing by connecting your ground lead to one of the switch mounting screws 300 BT Safety Switches Instructions Con interlock switch and actuator should be in only three con for actuation 1 2 Actuation Recommended parallel actuation can result in on o double actuation if the actuator passes by the switch rather than to rest in proximity to it This is NOT a recommended for safety interlock applications Con LED 1 2 3 shown with magnet actuator away from switch open reed switch closed when actuator is within sense range S3 Normally open reed switches will close if misaligned or with a standard magnet closed reed switch open when actuatior is between sense range open reed switch closed when actuator is within sense range circuit Black and white wires biased tamper circuit Red and blue wires monitor circuit Orange and brown wires 300 BT Safety Switches Instructions Diagram For Category 3 shown with safety gates guards in closed position guards are closed safe outputs are closed 300 BT Series GuardSwitch required for each safety gate one INT relay for each machine Circuit 230V AC 120V AC 24V DC Fast or Fuse 5x20 mm F 40mA 80mA 1 4A X2 Monitor Relay Circuit other DPST GuardSwitch the 300 BT Series installation instructions Fast or Slow Fuses 4A 250V mm F VAC VDC VAC VDC The LED on the BLT model will be ON when the guard is open 1 A 250 v DPST GuardSwitches Shown with actuators in position all guards closed L E D of the BLT model will be on when the guard is open If multiple guards open L E D will be dimmer The maximum number of GuardSwitches that can used is 50 although troubleshooting and line resistance must be considered not exceed 30 Ohms of combined contact and line resistance Each GuardSwitch have less than 0.5 Ohms of resistance Diagram For Category 4 shown with safety gates guards in closed position guards are closed safe outputs are closed 300 BT Series GuardSwitches with one INT relay are required for each safety gate applying the GuardSwitch Monitor Relay the inputs must be cycled to check for proper before the output contact close To cycle the inputs the guard must be opened and then This start up test is su however we recommend that the proper operation of the and relay be checked at least every 24 hours 230V AC 120V AC 24V DC Fast or Fuse 5x20 mm F 40mA 80mA 1 4A X2 Monitor Relay other DPST GuardSwitch the 300 BT Series instructions Fast or 4A 250V mm F VAC VDC VAC VDC The LED on the BLT model be ON when the guard is open 1A 250V 300 BT Safety Switches Instructions Compliance Information switches are T certi for CE applications only when with the INT Series Safety Monitor Relays See Risk Category 3 Category 4 wiring diagrams Interlogix Industrial of electrical equipment industrial machines Directives Directive 89 392 EEC Directive 89 336 EEC Voltage Directive 73 23 EEC European Standards Part 1 2 Safety of Machinery basic 947 5 3 50178 664 1 68 technical principles Assessment Category 3 or depending on wiring method diagrams Emissions Immunity Devices Circuit Devices of Electrical Equipment requirements 2 1 2 2 2 3 2 8 2 14 2 30 Humidity Rating 30 to 95 Environment Pollution Degree II Correct use of this control devise is an essential part of proper machine cycle control Failure to follow ALL instructions could lead to serious bodily injury or death Maintenance to be done by quali personnel only The connecting cables between the INT de vices and the switches must be located in an IP 23 type enclosure minimum The mounting for the switch and the acuator must be accomplished per this speci Non removable hardware must be used for installation The housing of the 300 BT Series Guard Switches must be connected to the PE Primary Earth ground circuit via a lock washer on the mounting screw The PE ground symbol must be placed adjacent to the screw a full sized signed version see page 26 of Conformity upon request