5ST3748 SIEMENS

The ‌SIEMENS Analog Output Modules (AO Modules)‌ are dedicated signal conversion units for Siemens industrial automation systems, which convert the digital control results calculated by the PLC central processing unit into standard continuous analog voltage or current signals. These modules directly connect to on-site actuators such as proportional valves, frequency converters, regulators and display instruments, enabling stepless adjustment of process parameters like flow, pressure, speed and temperature. Fully compatible with SIMATIC S7 series PLCs and ET 200 distributed I/O systems, they form a complete closed-loop control together with analog input modules, realizing precise regulation of industrial production processes.

Core Product Parameters

• ‌Channel configuration‌: 2/4/8/16 output channels optional, supporting single-ended and differential output modes
• ‌Signal types‌: Natively compatible with ±5V, ±10V, 0~10V voltage signals, 0~20mA and 4~20mA standard industrial current signals
• ‌Resolution‌: 11/12/13/16 bits selectable, with the highest output accuracy reaching 0.05% of full scale
• ‌Response speed‌: Single-channel settling time as low as 0.1ms, full-channel update cycle not exceeding 2ms
• ‌Isolation performance‌: 500V~2500V AC reinforced galvanic isolation between channels and between channels and backplane bus, meeting IEC 61000 EMC anti-interference standards
• ‌Load capacity‌: Voltage output maximum load ≥1kΩ, current output maximum load ≤600Ω, supporting long-distance on-site signal transmission
• ‌Diagnosis function‌: Natively supports short circuit detection, under-load alarm, over-temperature protection and channel-level fault feedback
• ‌Operating environment‌: Industrial wide temperature range from -25°C to +60°C, IP20 protection rating, supporting hot-swap under live backplane bus

Key Product Advantages

1. ‌High-precision stable output‌: 16-bit high-resolution DA conversion and built-in signal smoothing circuit, ensuring the output signal has no obvious ripple and jitter, avoiding frequent jitter of on-site actuators
2. ‌Strong load adaptability‌: Wide load range design, which can adapt to different types of actuators without adding additional signal amplifiers, reducing on-site hardware costs
3. ‌Full safety protection‌: Built-in short-circuit and over-current protection, which can automatically limit the output current when the on-site wiring is short-circuited, and will not cause permanent burnout of the module
4. ‌Efficient engineering configuration‌: All signal range settings, output calibration and fault diagnosis can be completed in TIA Portal, no extra potentiometer adjustment on the hardware is required
5. ‌High industrial reliability‌: Industrial-grade components with three-proof conformal coating, mean time between failures (MTBF) exceeds 500,000 hours, suitable for long-term operation in harsh industrial environments

Important Notes

• Before powering on, confirm that the output signal type configured in the software matches the signal type required by the on-site actuator. Mismatch may cause abnormal action of the actuator or even damage the connected equipment
• The shielded output signal cable must be single-end grounded at the control cabinet side. Double-end grounding of the shield layer is strictly forbidden, otherwise the ground loop current will cause signal drift
• The actual load impedance of the current output channel must not exceed the maximum allowable load specified by the module, otherwise the output signal will be distorted and the accuracy will be lost
• Do not hot-swap the analog output module when the on-site actuator is powered on, otherwise the instantaneous surge signal may cause misoperation of the actuator and affect production safety
• Regularly check the tightness of the wiring terminals every 12 months to prevent poor contact caused by long-term mechanical vibration, which leads to unstable output signals