YASKAWA S-7 series linear servo

Cleaning requirements: The installation area should be free of dust and metal shavings, and lubricating oil should not be applied to the surface of the magnetic track.

(2) Magnetic track installation operation

Positioning and fixation:

Single segment magnetic track: placed on the equipment positioning platform, with the reference mark (4mm diameter pit) facing the equipment, fixed with a 10.9 grade hex socket screw, tightening torque 3.6-41.5N · m (according to the model: SGLG uses M4 screws, torque 3.6-5.0N · m; SGLT uses M8 screws, torque 29.7-41.5N · m);

Multi segment magnetic track: The distance between adjacent magnetic tracks should be ≥ 30mm, aligned with reference marks, and the gap at the connection should be ≤ 0.1mm to avoid thrust fluctuations.

Gap calibration: The gap between the magnetic track and the rotor should be uniform, measured with a non-magnetic feeler gauge, with an error of ≤± 0.3mm (SGLG series gap 0.8 ± 0.3mm, SGLT series gap 1.0 ± 0.3mm).

(3) Assembly process of moving parts

Preprocessing: Check for cracks in the rotor winding and plastic casing, and ensure that the polarity sensor plug is not damaged;

Fixed rotor: Fix the rotor to the workbench with M4-M8 level screws, with a screw fit length of ≥ 4mm and a tightening torque of 2.4-20N · m (SGLG uses M4 screws with a torque of 2.4N · m; SGLF uses M8 screws with a torque of 20N · m);

Approaching the magnetic track: Slowly move the worktable to bring the rotor closer to the magnetic track, and monitor for any frictional noise during the process;

Gap verification: Insert a 0.8-1.4mm non-magnetic feeler gauge into the gap between the rotor and the magnetic track to ensure uniform clearance throughout the entire stroke;

Cable fixation: The movable cable is fixed in the direction of the worktable movement, with a bending radius of ≥ 15mm (cable diameter<8mm) or ≥ cable diameter × 3 (cable diameter>8mm), to avoid pulling and causing breakage.

(4) Special requirements for water-cooled models (SGLFW2-90A series)

Cooling medium: Deionized water, pH 6.8-8.0, conductivity ≤ 30mS/m, chloride ion content ≤ 50mg/L, no oil stains or impurities;

Flow and pressure: rated flow rate 4L/min, maximum flow rate 6L/min, working pressure ≤ 0.5MPa, instantaneous pressure ≤ 1.0MPa;

Pipeline installation:

Pipeline material: stainless steel or corrosion-resistant plastic, with Rc1/8 tapered pipe thread joints, wrapped with sealing tape to prevent water leakage;

Filtering and protection: Install a ≥ 0.5mm impurity filter at the inlet, and keep the pipeline away from high-temperature components (such as motor windings);

Maintenance requirement: Drain the accumulated water in the pipeline during long-term shutdown to avoid icing damage.

2. Electrical installation specifications

(1) Wiring sequence and principles

Wiring sequence: First connect the servo main circuit cable (U/V/W/FG), then connect the encoder cable, and finally connect the sensor cable (polarity sensor/thermal protector). Live wiring is prohibited;

Grounding requirements:

Ground resistance of servo amplifier: 400V level ≤ 10 Ω, 200V level ≤ 100 Ω;

Motor grounding: The FG terminal is connected to the protective grounding of the equipment, and the cross-section of the grounding wire is ≥ 10mm ² (copper core). The shielding layer is grounded at one end (amplifier side);

Cable separation: The distance between the power cable (main circuit) and the signal cable (encoder/sensor) should be ≥ 30cm. It is forbidden to wire or bundle them in the same pipe to avoid electromagnetic interference.

(2) Core cable selection and connection

Cable type, usage, length limit, recommended model, connection requirements

Servo main circuit cable transmission motor power supply ≤ 20 meters JZSP-CLN11 (SGLG), JZSP-CLN21 (SGLF), JZSP-CLN39 (SGLT) phase U (red), V (white), W (blue) corresponding connection, FG (green yellow) grounding

Encoder cable transmission position detection signal ≤ 50 meters JZSP-CLL00 (Renishaw encoder), JZSP-CLL30 (Heidenhain encoder) shielded twisted pair, away from power cables, with firm and secure joints without looseness

Sensor cable transmission polarity sensor/thermal protector signal ≤ 15 meters JZSP-CLL10 (regular model), JZSP-CL2L100 (model with thermal protector) polarity sensor+5V (red), 0V (black), signal terminal (white/blue) corresponding connection

(3) Serial conversion unit (JZDP series) connection

Function: Convert the sine/cosine signal of the linear encoder into a digital signal, transmit it to the servo amplifier, and receive signals from the polarity sensor and thermal protector;

Power supply requirements: Power supply+5V ± 5%, current consumption ≤ 160mA (excluding encoder and sensor currents);

Signal requirement: Analog input signal amplitude 0.4-1.2V, differential input, to avoid signal attenuation.

Safety regulations and compliance standards

1. Core security requirements

(1) Electrical safety

Power off operation: Disconnect all power sources before maintenance, wait for the servo amplifier CHARGE indicator light to turn off (≥ 5 minutes), use a multimeter to confirm that the main circuit voltage is ≤ 50Vdc before operation;