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TM PosInput 2 counting and position detection module

Article number		6ES7551-1AB00-0AB0
		S7-1500, TM POSINPUT 2
General information
Product type designation		TM PosInput 2
Product function
? I&M data		Yes; I&M 0
Engineering with
? STEP 7 TIA Portal configurable/integrated as of version		V12 SP1 / V12 SP1
? STEP 7 configurable/integrated as of version		V5.5 SP3 / -
? PROFINET as of GSD version/GSD revision		V2.3 / -
Installation type/mounting
Rail mounting		Yes; S7-1500 mounting rail
Supply voltage
Load voltage L+
? Rated value (DC)		24 V
? Reverse polarity protection		Yes
Input current
Current consumption, max.		75 mA; without load
Encoder supply
Number of outputs		4; One 5V and 24V encoder supply per channel
5 V encoder supply
? 5 V		Yes; 5.2 V +/-2%
? short-circuit protection		Yes
? Output current, max.		300 mA; Per channel
24 V encoder supply
? 24 V		Yes; L+ (-0.8 V)
? Short-circuit protection		Yes
? Output current, max.		300 mA; Per channel
Power
Power available from the backplane bus		1.3 W
Power loss
Power loss, typ.		5.5 W
Digital inputs
Number of digital inputs		4; 2 per channel
Digital inputs, parameterizable		Yes
Input characteristic curve in accordance with IEC 61131, type 3		Yes
Digital input functions, parameterizable
? Gate start/stop		Yes; only for pulse and incremental encoders
? Capture		Yes
? Synchronization		Yes; only for pulse and incremental encoders
? Freely usable digital input		Yes
Input voltage
? Type of input voltage		DC
? Rated value (DC)		24 V
? for signal "0"		-30 to +5V
? for signal "1"		+11 to +30V
? permissible voltage at input, min.		-30 V
? permissible voltage at input, max.		30 V
Input current
? for signal "1", typ.		2.5 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable		Yes; none / 0.05 / 0.1 / 0.4 / 0.8 / 1.6 / 3.2 / 12.8 / 20 ms
— at "0" to "1", min.		6 µs; for parameterization "none"
— at "1" to "0", min.		6 µs; for parameterization "none"
for counter/technological functions
— parameterizable		Yes
Cable length
? shielded, max.		1 000 m
? unshielded, max.		600 m
Digital outputs
Type of digital output		Transistor
Number of digital outputs		4; 2 per channel
Digital outputs, parameterizable		Yes
Short-circuit protection		Yes; electronic/thermal
Limitation of inductive shutdown voltage to		L+ (-33 V)
Controlling a digital input		Yes
Digital output functions, parameterizable
? Switching tripped by comparison values		Yes
? Freely usable digital output		Yes
Switching capacity of the outputs
? with resistive load, max.		0.5 A; Per digital output
? on lamp load, max.		5 W
Load resistance range
? lower limit		48 ?
? upper limit		12 k?
Output voltage
? Type of output voltage		DC
? for signal "1", min.		23.2 V; L+ (-0.8 V)
Output current
? for signal "1" rated value		0.5 A; Per digital output
? for signal "0" residual current, max.		0.5 mA
Output delay with resistive load
? "0" to "1", max.		50 µs
? "1" to "0", max.		50 µs
Switching frequency
? with resistive load, max.		10 kHz
? with inductive load, max.		0.5 Hz; Acc. to IEC 60947-5-1, DC-13; observe derating curve
? on lamp load, max.		10 Hz
Total current of the outputs
? Current per module, max.		2 A
Cable length
? shielded, max.		1 000 m
? unshielded, max.		600 m
Encoder signals, incremental encoder (symmetrical)
? Input voltage		RS 422
? Input frequency, max.		1 MHz
? Counting frequency, max.		4 MHz; with quadruple evaluation
? Cable length, shielded, max.		32 m; at 1 MHz
? Signal filter, parameterizable		Yes
? Incremental encoder with A/B tracks, 90° phase offset		Yes
? Incremental encoder with A/B tracks, 90° phase offset and zero track		Yes
? Pulse encoder		Yes
? Pulse encoder with direction		Yes
? Pulse encoder with one impulse signal per count direction		Yes
Encoder signals, incremental encoder (asymmetrical)
? Input voltage		5 V TTL (push-pull encoders only)
? Input frequency, max.		1 MHz
? Counting frequency, max.		4 MHz; with quadruple evaluation
? Signal filter, parameterizable		Yes
? Incremental encoder with A/B tracks, 90° phase offset		Yes
? Incremental encoder with A/B tracks, 90° phase offset and zero track		Yes
? Pulse encoder		Yes
? Pulse encoder with direction		Yes
? Pulse encoder with one impulse signal per count direction		Yes
Encoder signals, absolute encoder (SSI)
? Input signal		to RS-422
? Telegram length, parameterizable		10 ... 40 bit
? Clock frequency, max.		2 MHz; 125 kHz, 250 kHz, 500 kHz, 1 MHz, 1.5 MHz or 2 MHz
? Binary code		Yes
? Gray code		Yes
? Cable length, shielded, max.		320 m; Cable length, RS-422 SSI absolute encoders, Siemens type 6FX2001-5, 24 V supply: 125 kHz, 320 meters shielded, max.; 250 kHz, 160 meters shielded, max.; 500 kHz, 60 meters shielded, max.; 1 MHz, 20 meters shielded, max. 1.5 MHz, 10 meters shielded, max.; 2 MHz, 8 meters shielded, max.
? Parity bit, parameterizable		Yes
? Monoflop time		16, 32, 48, 64 µs & automatic
? Multiturn		Yes
? Singleturn		Yes
Interface types
? RS 422		Yes
? TTL 5 V		Yes; push-pull encoders only
Isochronous mode
Isochronous operation (application synchronized up to terminal)		Yes
Filtering and processing time (TCI), min.		130 µs; only for pulse and incremental encoders
Bus cycle time (TDP), min.		250 µs
Interrupts/diagnostics/status information
Alarms
? Diagnostic alarm		Yes
? Hardware interrupt		Yes
Diagnostic messages
? Monitoring the supply voltage		Yes
? Wire-break		Yes
? Short-circuit		Yes
? A/B transition error at incremental encoder		Yes
? Telegram error at SSI encoder		Yes
Diagnostics indication LED
? RUN LED		Yes; Green LED
? ERROR LED		Yes; Red LED
? MAINT LED		Yes; yellow LED
? Monitoring of the supply voltage (PWR-LED)		Yes; Green LED
? Channel status display		Yes; Green LED
? for channel diagnostics		Yes; Red LED
Integrated Functions
Number of counters		2
Counting frequency (counter) max.		4 MHz; with quadruple evaluation
Counting functions
? Can be used with TO High_Speed_Counter		Yes; only for pulse and incremental encoders
? Continuous counting		Yes
? Counter response parameterizable		Yes
? Hardware gate via digital input		Yes
? Software gate		Yes
? Event-controlled stop		Yes
? Synchronization via digital input		Yes
? Counting range, parameterizable		Yes
Comparator
— Number of comparators		2; Per channel
— Direction dependency		Yes
— Can be changed from user program		Yes
Position detection
? Incremental acquisition		Yes
? Absolute acquisition		Yes
? Suitable for S7-1500 Motion Control		Yes
Measuring functions
? Measuring time, parameterizable		Yes
? Dynamic measurement period adjustment		Yes
? Number of thresholds, parameterizable		2
Measuring range
— Frequency measurement, min.		0.04 Hz
— Frequency measurement, max.		4 MHz
— Cycle duration measurement, min.		0.25 µs
— Cycle duration measurement, max.		25 s
Accuracy
— Frequency measurement		100 ppm; depending on measuring interval and signal evaluation
— Cycle duration measurement		100 ppm; depending on measuring interval and signal evaluation
— Velocity measurement		100 ppm; depending on measuring interval and signal evaluation
Potential separation
Potential separation channels
? between the channels		No
? between the channels and backplane bus		Yes
? Between the channels and load voltage L+		No
Isolation
Isolation tested with		707 V DC (type test)
Ambient conditions
Ambient temperature during operation
? horizontal installation, min.		0 °C
? horizontal installation, max.		60 °C; Please note derating for inductive loads
? vertical installation, min.		0 °C
? vertical installation, max.		40 °C; Please note derating for inductive loads
Decentralized operation
to SIMATIC S7-1500		Yes
to standard PROFINET controller		Yes
Dimensions
Width		35 mm
Height		147 mm
Depth		129 mm
Weights
Weight, approx.		325 g

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