General information
Product type designationTM SIWAREX WP321 ST
FW update possibleYes
based on7MH4138-6AA00-0BA0
usable BaseUnitsBU type A0
Color code for module-specific color-coded labelCC00
Product function
I&M dataYes; I&M0 to I&M3
Isochronous modeNo
Adjustment of measuring rangeNo
Engineering with
STEP 7 TIA Portal configurable/integrated from versionsee entry ID: 109746275
Supply voltage
Rated value (DC)24 V
Load voltage L+
Rated value (DC)24 V
permissible range, lower limit (DC)19.2 V
permissible range, upper limit (DC)28.8 V
Short-circuit protectionYes
Reverse polarity protectionYes
Input current
Current consumption, max.100 mA
Encoder supply
Output voltage (DC)4.85 V
Short-circuit protectionYes
Power
Power consumption from the backplane bus70 mW
Power loss
Power loss, typ.2 W
Address space per module
Inputs16 byte
Outputs16 byte
Hardware configuration
Automatic encodingYes
Mechanical coding elementYes
Type of mechanical coding elementtype B
Connection of signal encoders
For strain gauges (full bridges) with 4-conductor connectionYes
For strain gauges (full bridges) with 6-conductor connectionYes
Resistance of full bridge, min.40 Ω; when using SIWAREX IS: 50 ohm for 7MH4710-5BA; 105 ohm when using 7MH4710-5CA
Resistance of full bridge, max.4 100 Ω
Errors/accuracies
Linearity error (relative to input range), (+/-)0.01 %
Error limit according to DIN 1319-10.05 %; of full-scale value
Temperature coefficient, zero point≤ ±0.1 μV/K
Temperature coefficient, span≤ ±5 ppm/K
Temperature coefficient, span, 4-wire connection (in relation to end value)≤ ±5 ppm/K
Temperature coefficient, span, 6-wire connection (in relation to end value)≤ ±10 ppm/K
Interfaces
Number of RS 485 interfaces1; SIWATOOL V7 or SIWAREX DB or SIEBERT remote display
Interface types
RS 485Yes; 390 Ω, 220 Ω, 390 Ω connectable termination
RS 485
Transmission rate, max.115.2 kbit/s
Cable length, max.1 000 m; ≤ 115 kbps, shielded cable
Interrupts/diagnostics/status information
Diagnostics functionYes; Diagnostic alarm
Substitute values connectableNo
Alarms
Diagnostic alarmYes; Parameterizable
Hardware interruptYes; Parameterizable
Diagnoses
Monitoring the supply voltageYes
Wire breakYes
Short-circuitYes
Group errorYes
Diagnostics indication LED
ERROR LEDYes; green/red DIAG LED
Monitoring of the supply voltage (PWR-LED)Yes; green PWR LED
Integrated Functions
CounterYes
Load cell
Non-automatic weighing instrumentNAWI
Sampling rate600 Hz
Resolution of input signal±500 000 parts pro mV/V
Common mode voltage, min.0.25 V
Common mode voltage, max.4.75 V
input resistance of signal line, typ.4 MΩ
input resistance of sense line, typ.2 MΩ
Cable length, max.500 m; when using the SIWAREX 7MH4702-8AG cable
Measuring range
— -1 mV/V to +1 mV/VYes; corresponds to a resolution of ±500 000 parts
— -2 mV/V to +2 mV/VYes; corresponds to a resolution of ±1 000 000 parts
— -4 mV/V to +4 mV/VYes; corresponds to a resolution of ±2 000 000 parts
Isolation
Isolation tested with707 V DC (type test)
Standards, approvals, certificates
Suitable for safety functionsNo
Ambient temperature during operation
horizontal installation, min.-40 °C; = Tmin (incl. condensation/frost)
horizontal installation, max.60 °C
vertical installation, min.-40 °C; = Tmin (incl. condensation/frost)
vertical installation, max.50 °C
Altitude during operation relating to sea level
Installation altitude above sea level, max.5 000 m
Ambient air temperature-barometric pressure-altitudeTmin ... Tmax at 1 080 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax - 20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)
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
Coolants and lubricants
— Resistant to commercially available coolants and lubricantsYes; Incl. diesel and oil droplets in the air
Use in stationary industrial systems
— to biologically active substances according to EN 60721-3-3Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request
— to chemically active substances according to EN 60721-3-3Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
— to mechanically active substances according to EN 60721-3-3Yes; Class 3S4 incl. sand, dust, *
— Against mechanical environmental conditions acc. to EN 60721-3-3Yes; Class 3M8 using the SIPLUS Mounting Kit ET 200SP (6AG1193-6AA00-0AA0)
Use on ships/at sea
— to biologically active substances according to EN 60721-3-6Yes; Class 6B2 mold, fungal and dry rot spores (excluding fauna)
— to chemically active substances according to EN 60721-3-6Yes; Class 6C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
— to mechanically active substances according to EN 60721-3-6Yes; Class 6S3 incl. sand, dust; *
— Against mechanical environmental conditions acc. to EN 60721-3-6Yes; Class 6M4 using the SIPLUS Mounting Kit ET 200SP (6AG1193-6AA00-0AA0)
Usage in industrial process technology
— Against chemically active substances acc. to EN 60654-4Yes; Class 3 (excluding trichlorethylene)
— Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04Yes; 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)
Remark
— Note regarding classification of environmental conditions acc. to EN 60721, EN 60654-4 and ANSI/ISA-71.04* The supplied plug covers must remain in place over the unused interfaces during operation!
Conformal coating
Coatings for printed circuit board assemblies acc. to EN 61086Yes; Class 2 for high reliability
Protection against fouling acc. to EN 60664-3Yes; Type 1 protection
Military testing according to MIL-I-46058C, Amendment 7Yes; Discoloration of coating possible during service life
Qualification and Performance of Electrical Insulating Compound for Printed Board Assemblies according to IPC-CC-830AYes; Conformal coating, Class A
Decentralized operation
to SIMATIC S7-300Yes
to SIMATIC S7-400Yes
to SIMATIC S7-1200Yes
to SIMATIC S7-1500Yes
to standard PROFIBUS masterYes
to standard PROFINET controllerYes
Dimensions
Width15 mm
Height73 mm
Depth58 mm
Weights
Weight, approx.30 g