Siemens 6ES7450-1AP01-0AE0

FM 450-1 counter module, 2 channels, up to 500 kHz

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Maker: Siemens
Part no.: 6ES7450-1AP01-0AE0
Serial / rev.: as printed on your unit

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Siemens SIMATIC S7-400 FM 450-1 counter module: 2 counting channels for incremental encoders, up to 500 kHz at 5 V or 200 kHz at 24 V, configuration package on CD.

Manufacturer: Siemens
Manufacturer part no.: 6ES7450-1AP01-0AE0
Product family: SIMATIC S7-400 PLC CPUs, I/O and Function Modules
Type: Counter module
Category: PLCs and I/O › Counter, positioning and temperature modules
Lifecycle: Discontinued
OEM successor: Not stated
Technical datasheet: Data sheet

Technical specifications

Manufacturer: Siemens
Manufacturer part no.: 6ES7450-1AP01-0AE0
Type: Counter module
Application: Counter module
Used with: SIMATIC S7-400 rack
Auxiliary voltage 1L+, load voltage 2L+ / Rated value (DC): 24 V
Auxiliary voltage 1L+, load voltage 2L+ / permissible range, lower limit (DC): 20.4 V; Dynamic 18.5 V
Auxiliary voltage 1L+, load voltage 2L+ / permissible range, upper limit (DC): 28.8 V; dynamic 30.2 V
Input current / from load voltage 1L+ (without load), max.: 50 mA
Input current / from load voltage 2L+ (without load), max.: 60 µA
Input current / from backplane bus 5 V DC, max.: 300 mA
5 V encoder supply / 5 V: Yes; 5.2 V ±2 %
5 V encoder supply / Short-circuit protection: Yes
5 V encoder supply / Output current, max.: 300 mA
24 V encoder supply / 24 V: Yes; 1L+ (-3 V)
24 V encoder supply / Short-circuit protection: Yes
24 V encoder supply / Output current, max.: 300 mA
Power loss, typ.: 6 W
Number of digital inputs: 6
Digital inputs / Functions: 1 for gate start, 1 for gate stop, 1 for setting the counter
Input voltage / for signal "0": -28.8 ... +5V
Input voltage / for signal "1": +11 to +28.8V
Input current / for signal "1", typ.: 9 mA
Input delay (for rated value of input voltage) / Input frequency (with a time delay of 0.1 ms), max.: 200 kHz
Input delay (for rated value of input voltage) / for standard inputs / parameterizable: Yes
Input delay (for rated value of input voltage) / for standard inputs / at "0" to "1", max.: 2.5 µs; ≥ 2.5 µs (200 kHz); ≤ 25 µs (20 kHz)
Number of digital outputs: 4
Digital outputs / Short-circuit protection: Yes; Clocked electronically
Digital outputs / Limitation of inductive shutdown voltage to: 2L+ (-39 V)
Output voltage / for signal "0", max.: 3 V

Show all 67 specifications

Output voltage / for signal "1", min.: 2L+ (-1,5 V)
Output current / for signal "1" rated value: 0.5 A; Res. / P.D. 5 W tungsten 24 V DC
Output current / for signal "1" permissible range for 0 to 60 °C, min.: 5 mA
Output current / for signal "1" permissible range for 0 to 60 °C, max.: 0.6 A
Output delay with resistive load / "0" to "1", max.: 300 µs
Connectable encoders / Incremental encoder (symmetrical): Yes; With 2 pulse trains offset by 90°
Connectable encoders / Incremental encoder (asymmetrical): Yes
Connectable encoders / 24 V initiator: Yes
Connectable encoders / 24 V directional element: Yes; 1 pulse train, 1 direction level
Interrupts/diagnostics/status information / Status indicator: Yes; 14 green LEDs for status of CR, DIR, inputs and outputs
Interrupts/diagnostics/status information / Diagnostics function: Yes
Alarms / Diagnostic alarm: Yes; Parameterizable
Alarms / Hardware interrupt: Yes; Parameterizable
Diagnoses / Diagnostic information readable: Yes
Diagnostics indication LED / internal fault INTF (red): Yes
Diagnostics indication LED / external fault EXTF (red): Yes
Diagnostics indication LED / Status indicator digital input (green): Yes
Diagnostics indication LED / Status indicator digital output (green): Yes
Number of counter inputs: 2; 32 bit or ±31 bit
Counter input 5 V / Type: RS 422
Counter input 5 V / terminating resistor: 220 Ω
Counter input 5 V / Differential input voltage: min. 0.5 V
Counter input 5 V / Counting frequency, max.: 500 kHz
Counter input 24 V / Input voltage for signal "0": -30 to +5 V
Counter input 24 V / Input voltage for signal "1": +11 to +30V
Counter input 24 V / Input current for signal "1", typ.: 9 mA
Counter input 24 V / Counting frequency, max.: 200 kHz
Counter input 24 V / Minimum pulse width: ≥ 2.5 µs (200 kHz); ≥ 25 µs (20 kHz) (parameterizable)
Potential separation digital inputs / between the channels and backplane bus: Yes; Optocoupler
Potential separation digital outputs / between the channels and backplane bus: Yes; Optocoupler
Potential separation counter / between the channels and backplane bus: Yes; Optocoupler
Isolation tested with: 500 V
required front connector: 1x 48-pin
Width: 25 mm
Height: 290 mm
Depth: 210 mm
Weight, approx.: 650 g

Technical documents (1)

Siemens data sheet 6ES7450-1AP01-0AE0

Key features

2 counting channels
5 V counter inputs up to 500 kHz, 24 V inputs up to 200 kHz
Incremental encoders with 2 pulse trains offset by 90°
Digital inputs for gate start, gate stop and setting the counter; 4 digital outputs
Discontinued by Siemens on 1 October 2026

About the Siemens 6ES7450-1AP01-0AE0

The Siemens 6ES7450-1AP01-0AE0 is the FM 450-1, the S7-400 counter module with 2 channels. Siemens's data sheet gives counting frequencies of up to 500 kHz on 5 V inputs and 200 kHz on 24 V inputs, incremental encoders with two pulse trains offset by 90°, 5 V and 24 V encoder supplies of up to 300 mA, 4 digital outputs at 0.5 A and 6 W typical power loss. SiePortal shows its phase-out announced on 1 October 2025 and its product cancellation on 1 October 2026.

What is the 6ES7450-1AP01-0AE0 used for?

It counts fast pulses from encoders and sensors for an S7-400 CPU, faster than ordinary digital inputs can.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number and firmware version on the module.

Other parts in the Siemens SIMATIC S7-400 family

Listed for reference. They differ from the 6ES7450-1AP01-0AE0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.

Product	Type	Lifecycle	Qty Available	Price	Action
Siemens 6ES7431-1KF20-0AB0SM 431 analog input, 8 AI, 14 bit, 0.42 ms for all channels	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-7QH00-0AB0SM 431 analog input, 16 AI, 16 bit, universal, diagnostics	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-7KF00-0AB0SM 431 analog input, 8 AI, 16 bit, U/I/thermocouple	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-7KF10-0AB0SM 431 analog input, 8 AI, 16 bit, resistance thermometers	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-0HH00-0AB0SM 431 analog input, 16 AI, 13 bit, non-isolated	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7432-1HF00-0AB0SM 432 analog output, 8 AO, 13 bit, U/I	Analog output module	Discontinued	On Request	On request	View
Siemens 6ES7451-3AL00-0AE0FM 451 positioning module, 3 channels, rapid/creep traverse	Positioning module	Discontinued	On Request	On request	View
Siemens 6ES7452-1AH00-0AE0FM 452 electronic cam controller, 16 cam tracks	Cam controller module	Discontinued	On Request	On request	View
Siemens 6ES7455-0VS00-0AE0FM 455 C controller module, 16 continuous control channels	Controller module	Discontinued	On Request	On request	View
Siemens 6ES7455-1VS00-0AE0FM 455 S controller module, 16 step and pulse control channels	Controller module	Discontinued	On Request	On request	View
Siemens 6ES7492-1AL00-0AA0Front connector for S7-400 signal modules, 48-pole, screw contacts	Front connector	Discontinued	On Request	On request	View
Siemens 6ES7492-1BL00-0AA0Front connector for S7-400 signal modules, 48-pole, spring-loaded contacts	Front connector	Discontinued	On Request	On request	View

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