135
saia-pcd.com
ref. Channel
ALE3
―En
T1―
T1part―
T2―
T2part―
Tariff―
ComErr―
ref. Channel
ALD1
―
EnTotal―
Partial―
ComErr―
ref. Channel
AWD3
―En
Ttot―
Partial―
CRatio―
ComErr―
Saia PCD®
L1
L2
L3
N
(PEN)
D /D
L1
L2
L3
N
(PEN)
N
L
Consumption data collection
5
Switch cabinet
components
4
Consumer
data acquisition
3
Dedicated
room controllers
2
Operation
and monitoring
1
Automation
stations
4.4.4
Saia PCD® energy meter with Modbus interface
ALD1
ALE3
AWD3
ALD1
D5FD00A2A00
ALD1
D5FD00A3A00
ALE3
D5FD10C2A00
ALE3
D5FD10C3A00
AWD3
D5WD00C2A00
AWD3
D5WD00C3A00
Tariff
1 tariff
–
–
2 tariffs
–
–
–
–
Approvals
With MID
–
–
–
Without MID
–
–
–
Rated/max. current
Current
I
min
= 0.05 A, I
N
= 5 A, I
max
= 6 A
–
–
–
–
I
min
= 0.25 A, I
N
= 5 A, I
max
= 32 A
–
–
–
–
I
min
= 0.5 A, I
N
= 10 A, I
max
= 65 A
–
–
–
–
Measurement type
Direct measurement
–
–
Conversion up to 1500 A
–
–
–
–
Operating voltage
230 VAC, 50 Hz
–
–
–
–
3 × 230/400 VAC, 50 Hz
–
–
Partial meter
Resettable
The integrated Modbus RTU interface complies with the IDA specification and is based on an RS-485 interface.
The measurement data from the energy meter can be connected to any Modbus Master to read out the
measured values. The relevant measurement data, such as energy, current, voltage, output (active and reactive)
and cosφ can be read out via the interface. The bus address can be set and the energy, current, voltage and
active output can be read direct on the display. Prefabricated FBoxes are available to connect the energy meters
to
Saia PCD® systems, which are supplied free of charge.
FBoxes available for
every M-Bus meter
type
Technical Data
Connection diagram for Modbus energy meters
Converter meter 3-phase
AWD3
Direct measurement 3-phase
ALE3
Direct measurement
single-phase ALD1
The following devices are available for Modbus parity 8N1:
ALD1D5FD00A3A44
ALD3D5FD10C3A44
AWD3D5WD00C3A44
Modbus
Bus system Serial RS-485 interface
Log
Modbus RTU as per IDA specification
Transmission rates 4,800, 9,600, 19,200, 38,400, 57,600, 115,200
baud. The transmission rate is detected
automatically
Bit settings
f
f
8 databit, even parity, 1 stop bit
f
f
8 databit, odd parity, 1 stop bit
f
f
8 databit, no parity, 2 stop bit
The parity is automatically detected
Bus cable
Twisted, shielded, 2 × 0.5 mm
2
, max. 1200 m
Response time Write: up to 60 ms
Read: up to 60 ms
