EXM 438-1 input/output expansion Siemens

Область применения

The optional EXM 438-1 input/output expansion module permits direct exchange of signals between the FM 458-1 DP basic module and the installation. The EXM 438-1 is able to record and convert the signals so rapidly that an up-to-date value is available for the FM 458-1 DP in every cycle (from 100 µs).

Обзор

Optional plug-in expansion module for the FM 458-1 DP basic module
For input and output of time-critical signals
With digital and analog inputs/outputs
Incremental and absolute value encoders can be connected
4 high-resolution analog outputs
Fan-free operation up to 40°C

Дизайн

5 analog inputs
4 analog outputs 12 bit
4 analog outputs 16 bit
16 digital inputs
8 digital outputs
8 incremental encoders, with synchronization capability
4 absolute encoders

A fan is required at ambient temperatures above 40 °C.

Accessories

SU13 interface module with SC63 cable for all signals without signal conversion.
SB10, SB71, SU12 interface modules with SC62 cable for digital outputs
SB10, SB61, SU12 interface modules with SC62 cable for digital inputs

Функции

Mode of operation

Coupling to FM 458-1 DP

The EXM 438-1 is connected directly to the FM 458-1 DP basic module via the internal bus. This makes the connection between the FM 458-1 DP and the I/O devices very fast. Only the power supply is obtained from the backplane bus of the SIMATIC rack, data transfer is not handled here. Access to the I/O is via configurable function blocks.

Configuration

Configuration instead of programming with CFC

The FM 458-1 DP is configured using the well-known software tools STEP 7 and CFC (Continuous Function Chart) which are also used to program the SIMATIC S7-400 controller.

CFC is an intuitive Windows-based program that is easy to learn. The CFC has been expanded to include the function blocks and the optimized operating system using the D7-SYS add-on software package.

For further information on D7-SYS, refer to "SIMATIC Software/Engineering Tools".

Технические данные

Order number		6DD1607-0CA1
		EXM 438-1 I/O EXPENSION
Supply voltage
Rated value (DC)
● 5 V DC		Yes
● 24 V DC		Yes; to be set up externally
Input current
Current consumption, typ.		1.5 A
Encoder supply
Type of output voltage		about 14 V (non-isolated)
Short-circuit protection		Yes; Electronic
Output current
● Rated value		100 mA
Hardware configuration
Slots
● required slots		1
Digital inputs
Number of digital inputs		16
Input voltage
● Rated value (DC)		24 V
● for signal "0"		-1 to +6 V or input open
● for signal "1"		+13 to +33V
Input current
● for signal "0", max. (permissible quiescent current)		0 mA
● for signal "1", typ.		3 mA
Input delay (for rated value of input voltage)
for standard inputs
— at "0" to "1", max.		200 µs
Digital outputs
Number of digital outputs		8
Short-circuit protection		Yes; electronic/thermal
● Response threshold, typ.		250 mA
Limitation of inductive shutdown voltage to		Supply voltage +1 V
Output voltage
● for signal "0", max.		3 V
● for signal "1", max.		Supply voltage -2.5 V
Output current
● for signal "1" rated value		50 mA
● for signal "1" permissible range for 0 to 40 °C, min.		100 mA
● for signal "0" residual current, max.		20 µA
● Total switching current		80% at 50 °C all outputs 50 mA
Output delay with resistive load
● "0" to "1", max.		15 µs
Analog inputs
Number of analog inputs		5; Differential inputs
Input ranges (rated values), voltages
● -10 V to +10 V		Yes; -10 V: +/-4 LSB; to +10 V: +/-4 LSB (1 LSB = 4.88 mV)
● Input resistance (-10 V to +10 V)		470 kΩ
Analog outputs
Number of analog outputs		8; 4 outputs 16 bit; 4 outputs12 bit
Voltage output, short-circuit protection		Yes; relative to frame
Voltage output, short-circuit current, max.		16 bits: 27 mA; 12 bits: 100 mA
Output ranges, voltage
● -10 V to +10 V		Yes
Analog value generation
Integration and conversion time/resolution per channel
● Resolution with overrange (bit including sign), max.		4 AO: 16 bits, 4 AO: 12 bits, 5 AI: 12 bits
● Conversion time (per channel)		4 AO (16 bits): 2 µs; 4 AO (12 bits): 4 µs; 5 AI: 45 µs
Encoder
Number of connectable encoders, max.		12; 8 incremental encoders (synchronizable), 4 absolute encoders
Connectable encoders
● Incremental encoder (symmetrical)		Yes
● Incremental encoder (asymmetrical)		Yes
● Absolute encoder (SSI)		Yes; Single or multiturn encoder with SSI (synchronous serial) or EnDat interface
Encoder signals, incremental encoder (symmetrical)
● Trace mark signals		1) for tracks A and B (90° out of phase), poss. with zero pulse N; 2) for separate forward and backward track
● Input signal		With 0 signal: -5 to 0 V; with 1 signal: +3 to +5 V; permissible input voltage range: differential voltage -5 to +5 V; max. input current: 15 mA (important: not limited on module side!)
Encoder signals, incremental encoder (asymmetrical)
● Trace mark signals		Track A and B (phase-shifted by 90 degrees), possibly with zero pulse N
● Input voltage		with 0 signal: -30 to +4 V (at 15 mA load); with 1 signal: +8 to 30 V (at 15 mA load); permissible input voltage range: differential voltage -30 to +30 V
Encoder signals, absolute encoder (SSI)
● Input signal		5 V acc. to RS 422
● Data signal		Dual-, Gray-, Gray-Excess-Code
● Clock frequency, max.		2 MHz; 100 kHz to 2 MHz (depending on cable length)
Errors/accuracies
Linearity error (relative to output range), (+/-)		(+/- 1 LSB )
Potential separation
Potential separation digital inputs
● Potential separation digital inputs		No
Potential separation digital outputs
● Potential separation digital outputs		No
Potential separation analog inputs
● Potential separation analog inputs		No
Potential separation analog outputs
● Potential separation analog outputs		No
Weights
Weight, approx.		1 kg