6AG2552-1AA00-4AB0

24 V encoder supply
24 V	Yes; L+ (-0.8 V)

24 V encoder supply
Output current, max	1.2A; Total current of all encoders / channels, max. 0.5 A per output
Short-circuit protection	Yes

Address space per module
Inputs	44byte

Address space per module
Outputs	74byte

Alarms
Diagnostic alarm	Yes

Altitude during operation relating to sea level
Installation altitude above sea level, max	2000m

Altitude during operation relating to sea level
Ambient air temperature-barometric pressure-altitude	Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m)

Ambient temperature during operation
horizontal installation, max	70C; = Tmax; +85 C for 10 min (OT4, ST1/ST2 acc. to EN 50155)

Ambient temperature during operation
horizontal installation, min	-40C; = Tmin (incl. condensation/frost)
vertical installation, min	-40C; = Tmin

Ambient temperature during operation
vertical installation, max	40C; = Tmax; Note derating

Cable length
shielded, max	1000m; depending on load and cable quality
unshielded, max	600m; depending on load and cable quality

Conformal coating
Qualification and Performance of Electrical Insulating Compound	Yes; Conformal coating, Class A

Conformal coating
Coatings for printed circuit board assemblies acc. to EN 61086	Yes; Class 2 for high reliability
Military testing according to MIL-I-46058C, Amendment 7	Yes; Discoloration of coating possible during service life
Protection against fouling acc. to EN 60664-3	Yes; Type 1 protection

Conformal coating
Electronic equipment on rolling stock acc. to EN 50155	Yes; Class PC2 protective coating acc. to EN 50155:2017

Connectable encoders
2-wire sensor	Yes

Connectable encoders
permissible quiescent current (2-wire sensor), max	1.5mA

Connectable encoders
Incremental encoder (asymmetrical)	Yes

Connectable encoders
24 V initiator	Yes

Coolants and lubricants
Resistant to commercially available coolants and lubricants	Yes; Incl. diesel and oil droplets in the air

Counter
Counting frequency, max	200kHz; with quadruple evaluation
Number of counters	4

Counting functions
Continuous counting	Yes

Decentralized operation
to SIMATIC S7-1500	Yes

Diagnoses
Monitoring the supply voltage	Yes

Diagnoses
Short-circuit	Yes

Diagnostics indication LED
for channel diagnostics	Yes; red LED
Monitoring of the supply voltage (PWR-LED)	Yes; green LED
RUN LED	Yes; green LED

Diagnostics indication LED
ERROR LED	Yes; red LED

Diagnostics indication LED
MAINT LED	Yes; Yellow LED

Diagnostics indication LED
Channel status display	Yes; green LED

Digital input functions, parameterizable
Counter for incremental encoder	Yes

Digital input functions, parameterizable
HW enable for digital output	Yes

Digital input functions, parameterizable
Counter	Yes

Digital input functions, parameterizable
Digital input with time stamp	Yes
HW enable for digital input	Yes
Number, max	4

Digital input functions, parameterizable
Digital input with oversampling	Yes

Digital inputs
Number of digital inputs	8; max. depending on parameterization

Digital inputs
Digital inputs, parameterizable	Yes
Input characteristic curve in accordance with IEC 61131, type 3	Yes

Digital inputs
in groups of	8

Digital output functions, parameterizable
PWM output	Yes

Digital output functions, parameterizable
Digital output with oversampling	Yes
Digital output with time stamp	Yes
Number, max	16

Digital outputs
in groups of	8

Digital outputs
Current-sinking	Yes; With High Speed output
Current-sourcing	Yes
Digital outputs, parameterizable	Yes
Response threshold, typ	1.7 A with Standard output, 0.5 A with High Speed output

Digital outputs
Controlling a digital input	Yes
Short-circuit protection	Yes; electronic/thermal

Digital outputs
Limitation of inductive shutdown voltage to	-0.8 V

Digital outputs
Number of digital outputs	16; max. depending on parameterization
Type of digital output	Transistor

Dimensions
Depth	129mm
Height	147mm
Width	35mm

Encoder signals, incremental encoder (asymmetrical)
Cable length, shielded, max	600m; Depending on input frequency, encoder and cable quality; max. 200 m at 50 kHz
pulse encoder	Yes

Encoder signals, incremental encoder (asymmetrical)
Input voltage	24 V

Encoder signals, incremental encoder (asymmetrical)
Input frequency, max	50kHz

Encoder signals, incremental encoder (asymmetrical)
Counting frequency, max	200kHz; with quadruple evaluation
Incremental encoder with A/B tracks, 90 phase offset	Yes

Encoder supply
Number of outputs	8; max. depending on parameterization

for standard inputs
at "0" to "1", min	4
at "1" to "0", min	4
parameterizable	Yes; none / 0.05 / 0.1 / 0.4 / 0.8 ms

General information
Product type designation	TM Timer DIDQ 16x24V

Input current
from load voltage 1L+ (without load), max	40mA; without load

Input current
from load voltage 2L+ (without load), max	30mA; without load

Input current
for signal "1", typ	2.5mA

Input delay (for rated value of input voltage)
Minimum pulse width for program reactions	3

Input voltage
Rated value (DC)	24V

Input voltage
for signal "0"	-5 ... +5 V
for signal "1"	+11 to +30V
Type of input voltage	DC

Input voltage
permissible voltage at input, min	-30V; -5 V continuous, -30 V brief reverse polarity protection

Input voltage
permissible voltage at input, max	30V

Installation type/mounting
Rail mounting	Yes; S7-1500 mounting rail

Interface types
Input characteristic curve in accordance with IEC 61131, type 3	Yes

Interrupts/diagnostics/status information
Substitute values connectable	Yes

Interrupts/diagnostics/status information
Diagnostics function	Yes

Isochronous mode
Jitter, max	1

Isochronous mode
Bus cycle time (TDP), min	250

Isolation
Isolation tested with	750 V DC (type test) and according to EN 50155 (routine test)

Load resistance range
lower limit	48Ω; 240 ohm with High Speed output

Load resistance range
upper limit	12kΩ

Load voltage 1L+
permissible range, lower limit (DC)	19.2V
permissible range, upper limit (DC)	28.8V
Rated value (DC)	24V
Reverse polarity protection	Yes; against destruction

Load voltage 2L+
Rated value (DC)	24V
Reverse polarity protection	Yes; against destruction

Load voltage 2L+
permissible range, lower limit (DC)	19.2V
permissible range, upper limit (DC)	28.8V

Other
Note:	for use in railway applications, also observe the product information "SIPLUS extreme RAIL" A5E37661960A, Online Support article 109736776

Output current
for signal "1" permissible range, max	0.6A; 0.12 A with High Speed output, observe derating

Output current
for signal "0" residual current, max	0.5mA

Output current
for signal "1" minimum load current	2mA
for signal "1" rated value	0.5A; 0.1 A with High Speed output, observe derating

Output delay with resistive load
"0" to "1", max	1
"1" to "0", max	1

Output voltage
Type of output voltage	DC

Output voltage
for signal "0", max	1V; With High Speed output
for signal "1", min	23.2V; L+ (-0.8 V)

Potential separation channels
between the channels and backplane bus	Yes

Power
Power available from the backplane bus	1.3W

Power loss
Power loss, typ	5W

Product function
Isochronous mode	Yes

Product function
I&M data	Yes; I&M 0

Railway application
EN 50121-3-2	Yes; EMC for rail vehicles
EN 50124-1	Yes; Railway applications - overvoltage category OV2; pollution degree PD2; rated surge voltage UNi = 0.5 kV; UNm = 24 V DC
EN 50125-2	Yes; Stationary electrical equipment - see ambient conditions
Fire protection acc. to EN 45545-2	Yes; For proof of conformity, see Service & Support

Railway application
EN 50125-1	Yes; Rail vehicles - see ambient conditions
EN 50125-3	Yes; Signal and telecommunications systems - see ambient conditions; vibrations and shocks: Application point outside of tracks (1 m to 3 m away from track)
EN 61373	Yes; Rail vehicles - vibrations and shocks: Category 1 Class A/B

Railway application
EN 50121-4	Yes; EMC for signal and telecommunications systems
EN 50155	Yes; Rail vehicles - temperature class OT4, ST1/ST2, horizontal mounting position

Relative humidity
With condensation, tested in accordance with IEC 60068-2-38, max	100%; RH incl. condensation / frost (no commissioning in bedewed state), horizontal installation

Remark
Note regarding classification of environmental conditions acc. t	* The supplied plug covers must remain in place over the unused interfaces during operation!

Switching capacity of the outputs
with resistive load, max	0.5A; 0.1 A with High Speed output

Switching capacity of the outputs
on lamp load, max	5W; 1 W with High Speed output

Switching frequency
on lamp load, max	10Hz

Switching frequency
with resistive load, max	10kHz

Total current of the outputs
Current per group, max	4A
Current per module, max	8A; Observe derating

Usage in industrial process technology
Against chemically active substances acc. to EN 60654-4	Yes; Class 3 (excluding trichlorethylene)
Environmental conditions for process, measuring and control syst	Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)

Use in stationary industrial systems
to biologically active substances according to EN 60721-3-3	Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request
to chemically active substances according to EN 60721-3-3	Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
to mechanically active substances according to EN 60721-3-3	Yes; Class 3S4 incl. sand, dust, *

Use on land craft, rail vehicles and special-purpose vehicles
to biologically active substances according to EN 60721-3-5	Yes; Class 5B2 mold, fungus and dry rot spores (with the exception of fauna); Class 5B3 on request
to chemically active substances according to EN 60721-3-5	Yes; Class 5C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
to mechanically active substances according to EN 60721-3-5	Yes; Class 5S3 incl. sand, dust; *

Weights
Weight, approx	320g