SIGMATEK DIAS Drive 310-23 servo amplifier

In terms of external fuses, AC voltage supply L1-L3 is suitable for 5000 rms symmetrical amperes, 528 V maximum, RK5 class 20A fuses, depending on the average power consumption of the connected amplifier. 24 V DC input 16 A slow melting, 2.5 mm ² wire diameter. External regeneration resistor 10A delay, 1200 V. In terms of grounding, DIAS Drive must be connected through a grounding terminal with a wire diameter of at least 10 mm ² (8 AWG) copper or 16 mm ² (5 AWG) aluminum. If connected through a plug that complies with IEC 60309, the cross-sectional area of the protective grounding conductor can be smaller, but at least 2.5 mm ² Cu, and appropriate stress relief must be provided. When using a leakage protector, a B-type FI switch must be used. The A-type FI switch may malfunction when encountering a DC grounding fault.

Safety features: STO and SS1

DIAS Drive 310-23, in conjunction with optional VARAN interface module VAC 013, supports SS1 (Safe Stop 1) and STO (Safe Torque Off) safety functions, meeting PL e/Cat. 4 of EN ISO 13849-1 and SIL 3 of EN 62061. The servo amplifier has two safety inputs, ENABLE-L and ENABLE-H. The typical safe input differential voltage is+24 V, with a maximum of+30 V. The low level is ≤+5 V, and the high level is ≥+15 V. The differential voltage is low<+6 V, and high>+14 V. The input current is about 10 mA at+24 V. The input delay is typically 0.1 ms, with a turn-on time of about 20 ms and a turn off time of 0.5 to 1 s. The relay output S3/S4 can be used to indicate the safety function status, but it is not safety related and can be used to test external safety functions. Stopping brake control is not a safety function. If it is necessary to safely turn off the stop brake, the+24 V-BR brake power supply must be turned off externally. 24V power supply can only use PELV/SELV.

The implementation of safety functions is based on modules such as input block IN, AMV multi harmonic oscillator, OPTO 01/02, CONTR 01/02, AMP 01/02, and transformer TR. The input block IN is powered by the AMV generated by the voltage difference between ENABLE-H and ENABLE-L. The voltage difference must exceed the minimum high-level signal. If the input voltage is disconnected, the IN block will provide power to the AMV for approximately 400 ms. Due to the non delayed provision of differential voltage to OPTO03, the motor can actively decelerate before the amplifier enters a safe state. AMV generates constant frequency pulses, which are transmitted to subsequent electronic devices through OPTO01 and OPTO02. These blocks form a safe switch power supply, which generates U-Driver driving voltage through transformer TR. When there is no control signal sent from the AMV, the switching power supply stops transmitting power. The relay outputs S1/S2 are closed when the servo amplifier is powered by 24V and the safety function is activated, but these two blocks are not safety related.

The safety function test must ensure that the entire safety circuit functions properly. Testing should be conducted after installation, at least once a year, and after each machine control change. If the test results are invalid, the errors must be identified and corrected before retesting. If the error occurs repeatedly, the machine must not continue to operate. Test conditions: The servo drive system is ready for operation, with safety inputs ENABLE-L low and ENABLE-H high, software application running, and motor running. According to the wiring, ENABLE-L and ENABLE-H can be disconnected simultaneously, or ENABLE-L can be connected to Ext. GND and ENABLE-H can be controlled by the safety output of the safety PLC. The motor speed should be reduced to zero, and the relay output S1/S2 should close after a minimum of 0.4 seconds and a maximum of 1 second (when the servo drive power supply is 24 V). The servo drive system should enter safe mode. To meet Cat. 4/PL e and SIL 3 requirements, dual channel control must be provided. The wiring of ENABLE-H and ENABLE-L must have protective insulation to avoid external voltage supply errors. When using a safety PLC, a single error safety output (based on Ext. GND) can be connected to ENABLE-H, and ENABLE-L can be connected to Ext. GND; Alternatively, use a dual channel error safety relay input, with the+output connected to ENABLE-H and the - output connected to ENABLE-L.

Feedback interface and encoder

DIAS Drive 310-23 supports multiple types of feedback: rotary encoders, EnDAT encoders (single and multi turn), Hiperface encoders (single and multi turn), Sin/Cos, and TTL encoders. For EnDAT, Hiperface, Sin/Cos, and TTL, the maximum feedback signal count per mechanical loop is 8192 (M-RPULSE). Rotary converter is a standard feedback, supporting single speed (2-pole) and multi speed (up to 32 poles) rotary converters, with a maximum cable length of 50 meters. If hot contacts are used, the signal is also connected to the rotary converter cable. The EnDAT encoder is a high-resolution feedback with a cable length limit of 25 m. The Hiperface encoder also has high resolution with a cable length limit of 25 m. The Sin/Cos encoder is used for linear or torque servo motors with a maximum cable length of 10 m. The TTL encoder has an upper limit frequency of 100 kHz and the reference signal is not evaluated in the amplifier. The feedback cable must be shielded and grounded at both ends of the shielding layer. Rotary wiring includes Cosine-(S3)、Cosine+(S1)、Sine-(S2)、Sine+(S4)、Reference-(R1)、Reference+(R2)、 Motor hot contacts GND。 EnDAT includes A-、A+、B-、B+、DATA+、DATA-、CLOCK+、CLOCK-、Up(5V)+、0V、Up(5V) Sense、0V Sense、 Hot contact point GND。 Hiperface includes+COS, REFCOS,+SIN, REFSIN, DATA+, DATA -, U_S, GND, hot contacts GND。 Sin/Cos and TTL include A-(TTL)/+cos(SinCos)、A+(TTL)/-cos(SinCos)、B-(TTL)/+sin(SinCos)、B+(TTL)/-sin(SinCos)、Up(5V)+、0V、Up(5V) Sense、0V Sense、 Motor hot contacts GND。 Wiring errors can lead to feedback errors, commutation errors, overspeed, or motor oscillation.