Recommended Tool . Stripper for a round cable (o2.0) can be used for a 2-wire type cable. Solid State Auto Switches Precautions Be sure to read this before handling. Description Wire stripper Model D-M9N-SWY 1. Keep wiring as short as possible. Be sure to use a wire length of 100 m or less. When the wire length is long, we recommend the ferrite core is attached to the both ends of the cable to prevent excess noise. A contact protection box is not necessary for solid state switches due to the nature of this product construction. 2. Do not use a load that generates surge voltage. If driving a load such as a relay that generates a surge voltage, use a built-in surge absorbing element type device. 3. Pay attention to the internal voltage drop of the auto switch. Generally, the internal voltage drop of the solid state auto switch is larger than that of the reed auto switch. When the auto switches (“n” pcs.) are connected in series, the voltage drop is multiplied by “n”. In this case, the auto switches operate correctly, but the loads may not operate. Additionally, note that the 12 VDC relay does not apply to the auto switch. 4. Pay attention to leakage current. <2-wire type> Current (leakage current) flows to the load to operate the internal circuit when in the OFF state. If the criteria given in the above formula are not met, it will not reset correctly (stays ON). Use a 3-wire auto switch if this specification will not be satisfied. Moreover, leakage current flow to the load will be “n” times larger when “n” auto switches are connected in parallel. 5. Output operation of the solid state auto switch is not stable for 50 [ms] after powered ON. In the output operation immediately after powered ON or AND connection operation, the input device (PLC or relay, etc.) may judge the ON position as OFF output or the OFF position as ON output. So, please make the setting on the equipment so that the input judgement signal is set disabled for 50 [ms] immediately after powered ON or AND connection. When using SMC’s AHC system (Auto Hand Changing System) Series MA, please also make this setting. 2. Avoid incorrect wiring. 1) If connections are reversed on a 2-wire type auto switch, the auto switch will not be damaged if protected by a protection circuit, but the auto switch will always stay in an ON state. However, it is still necessary to avoid reversed connections, since the auto switch could be damaged by a load short circuit in this condition. 2) If connections are reversed (power supply line + and power supply line .) on a 3-wire type auto switch, the auto switch will be protected by a protection circuit. However, if the power supply line (+) is connected to the blue wire and the power supply line (.) is connected to the black wire, the auto switch will be damaged. 3. When the lead wire sheath is stripped, confirm the stripping direction. The insulator may be split or damaged depending on the direction. (D-M9�ｭ only) 4. Do not disconnect the cable between the sensor and amplifier of the heat resistant 2-color display solid state auto switch by the customer. Even when the sensor and amplifier are connected again, a contact resistance is produced, causing the auto switch to malfunction. Additionally, the sensor and amplifier are paired and they do not operate correctly in different combinations. 1. Do not use in an area where surges are generated. If there is an equipment unit (electromagnetic lifter, high-frequency induction furnace, motor, or radio, etc.) that generates large surges or electromagnetic waves around cylinders with solid state auto switches or actuators, this may cause the circuit element inside the auto switch to break. 2. The A.C. magnetic field resistant solid state auto switch has no immunity against D.C. magnetic fields. So it is not suitable for use in applications where welding takes place using D.C. inverter/rectified source. If using in conjunction with a D.C. welding application, use it at a distance from the conductor, as with ordinary switches. Rough guide for distance from conductor to prevent malfunction (10,000 A: 30 cm or more). Additionally, as for effects of magnetization and demagnetization, in areas exceeding 10,000 A, occasionally detection performance may become unstable due to demagnetization of the detection magnet (weakening of magnetic field) and magnetization (temporary magnetization) of materials around the cylinders and actuators. If green and red indicators are not lit or if multi points operate, contact SMC. Caution Caution Design/Selection Operating current of load (OFF condition) > Leakage current Operating Environment Caution Wiring 1. Do not allow short-circuit of loads. All models of D-J51, G5NB and PNP output type auto switches do not have built-in short circuit protection circuits. Carefully handle as the auto switch may be damaged. Caution Wiring 16