Strong Points

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    Single voltage measurement

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    Plug & Play


The DIRIS Digiware Udc modules measure the DC voltage and send the voltage sampling to all DIRIS Digiware Idc modules via the RJ45 bus.
For multi-point metering applications, this reduces the number of voltage connections to only one central point.
Measuring up to 180 VDC with a direct connection, they are compatible with typical nominal voltages (24 VDC, 48 VDC etc.).
Voltage adaptors can be added to the DIRIS Digiware U-32dc module, making it compatible with all voltage levels up to 1650 VDC.

Certificates and Declaration
Conformity to standard #1 UL 61010-1 Guide PICQ File E257746
Conformity to standard #2 CSA-C22.2 No. 61010-1
Conformity to standard #3 IEC 61557-12
Conformity to standard #4 E257746
Proposition 65 California WARNING This product can expose you to chemicals including bisphenol A (BPA), which is known to the State of California to cause birth defects or reproductive harm. For more information go to :
Conformity to standards
  • IEC
  • UL
Certificates and Declaration - Safety
Safety standards IEC/EN 61010-1 UL 61010-1 CAN/CSA C22.2 No. 61010-1
UL file number E257746
General Product Characteristics
Device type DC voltage measurement module for DIRIS Digiware DC system
Technical Characteristics
Application Analysis
Model U-31DC
Rated voltage 24..48 VDC
Type DC voltage acquisition module
Technical Characteristics - Environmental
Maximum operating altitude 6560 feet / 2000 m
Operating temperature 14 ... 131 °F / -10 … +55°C
PEP ecopassport - ISO 14025 SOCO-00008-V01.01-EN
Relative humidity 131 °F / 55 °C / 97% relative humidity
Storage temperature -13 ... 158 °F / -25 … +70°C
Technical Characteristics - Measurement
Accuracy class Class 0.5 w/o adapter, 1 with adapter
General measurements DC Voltage
Power Quality measurements V Ripple, Vrms
Voltage measurement type DC
ETIM - Electrical characteristics
Sampling frequency [Hz] 10000
Number of voltage measurement inputs 2
Voltage type (supply voltage) DC
Supply voltage DC [V] 0..24
Measuring range for frequency [Hz] 45..65
Supporting protocol for IEC 61850 Ethernet No
Supporting protocol for OPC UA PubSub No
Supporting protocol for PROFIBUS No
Supporting protocol for Modbus Yes
Supporting protocol for PROFINET IO No
Supporting protocol for other bus systems No
With audit logging (audit log) No
With firmware signature Yes
With logging of security events (security event log) No
With Role Based Access Control (RBAC) No
Web server with HTTPS transfer protocol No
ETIM - Mechanical characteristics
Width [mm] 18
Height [mm] 90
Depth [mm] 65
ETIM - Technical features
Ampere meter No
Blind power meter No
With rotational speed meter No
Frequency meter No
Pulse counter No
Voltmeter Yes
Effective power measurement device No
Display None
Remote display No
GTIN/EAN 3596033002830
Customs number 9030337000
Price unit PC
Weight of the packing unit 0.09
Length of the packing unit 0.12
Width of the packing unit 0.08
Depth of the packing unit 0.03
Product Details
Effective date 2018-02-01
Country of origin FR
Discount Policy 1EN60
UNSPSC 83101808
ETIM Class EC002301
IGCC 6042