Siemens 6ES5470-8MA12 Analog Output Module

The Siemens 6ES5470-8MA12 Analog Output Module provides four analog output channels for SIMATIC S5 systems. This module converts digital values into 0-10 VDC or 4-20 mA signals. You will find it in process control applications like valve positioning and speed control. It delivers 12-bit resolution for precise analog output adjustments. Therefore, this unit suits demanding industrial automation tasks.

The Siemens 6ES5470-8MA12 Analog Output Module measures 230 mm in height and 48 mm in width. Its depth reaches 180 mm for standard rack mounting. The unit weighs approximately 0.65 kilograms. It contains one 12-bit DAC and four sample-hold circuits. Four isolation barriers separate field circuits from the backplane. Additionally, you get four status LEDs for channel monitoring.

Key Technical Specifications

Parameter	Value
Manufacturer	Siemens AG
Model	6ES5470-8MA12
Product Type	Analog Output Module
Number of Outputs	4 (single-ended)
Output Ranges	0-10 VDC or 4-20 mA
Resolution	12 bits (4096 steps)
Accuracy	±0.5% of full scale
Settling Time	2 ms per channel
Output Impedance (V)	100 ohms
Load Impedance (mA)	0 to 500 ohms
Height	230 mm
Width	48 mm
Depth	180 mm
Weight	0.65 kg
DAC Count	1 (multiplexed)
Sample-Hold Circuits	4
Isolation Rating	1500 VAC (optical)
Status LEDs	4 (yellow)
Energy Storage	≈ 220 µF (capacitive)
Power Consumption	250 mA @ 5 VDC
Operating Temperature	0°C to +60°C
Terminal Type	Screw (20-pin)

Internal Architecture and Energy Storage

The Siemens 6ES5470-8MA12 Analog Output Module stores minimal energy in its output filters. Small electrolytic capacitors hold approximately 220 microfarads total capacitance. A single 12-bit DAC generates analog values sequentially for all four channels. Four sample-hold circuits store each channel’s voltage simultaneously. Four optical isolators protect the backplane from field wiring noise. The module includes a precision voltage reference at 2.5 VDC. Each output can drive voltage loads down to 10 k ohms minimum. A yellow LED lights up when the module receives valid data from the CPU.

Connection Interfaces and Wiring Details

You will find a 20-pin removable terminal block on the bottom face. This block accepts four output pairs plus shield connections. Connect the positive output wire to the channel terminal. Connect the negative wire to the adjacent common terminal. Use shielded twisted-pair cable for long runs over 10 meters. The Siemens 6ES5470-8MA12 Analog Output Module does not require an external power supply. It takes all necessary power from the 5 VDC backplane rail. Four yellow LEDs light up when their respective channel receives a non-zero value. A green PWR LED indicates proper backplane power.

Configuration and Installation Steps

You slide this module into any I/O slot of the SIMATIC S5 rack. First, align the module with the upper and lower card guides. Then, push it firmly until the backplane connector seats completely. Secure the front panel with the two retaining screws. Connect all field wiring before applying power to the system. The Siemens 6ES5470-8MA12 Analog Output Module requires no jumpers or dip switch settings. Use the STEP 5 software to configure each output channel. Map each analog channel to a specific peripheral address. Select voltage or current mode through software configuration. Test each output with a multimeter before connecting field actuators.