Landis+Gyr S4e UtiliNet

paulelliottAug 1, 2025

What to do if Landis+Gyr S4e UtiliNet UtiliNet communicates but is not connecting to host?

M
melindacampbellAug 1, 2025
If the UtiliNet communicates but isn't connecting to the host, verify the correct DCW Programming. You can use the UtiliNet Radio Tool to check the UtiliNet programming status.

Summary

The Landis+Gyr S4e UtiliNet is a polyphase meter product designed for advanced communications in commercial and industrial metering applications. It combines Landis+Gyr's 4th generation solid-state commercial and industrial meter with an under-glass UtiliNet module, offering a comprehensive solution for energy measurement and data acquisition.

Function Description:

The S4e UtiliNet functions as an advanced electricity meter with integrated communication capabilities. Its primary purpose is to provide accurate energy measurement (active and reactive) and facilitate data acquisition for various metering needs, including cumulative, interval, registers, and event data. The device supports both on-demand and on-schedule reads, making it versatile for different operational requirements. It integrates into a UtiliNet network, where devices can act as both end devices and repeaters, utilizing packet switching data transmission and spread spectrum frequency hopping technology to increase coverage and ensure secure data transfer. The UtiliNet module is factory programmed with a LAN Address and uses Device Control Word (DCW) programming language.

Important Technical Specifications:

Applicable Standards:

ANSI C12.1-2001 (for electricity metering)
ANSI C12.10-1987 (for watt-hour meters)
ANSI C12.20-1998 (for solid-state electricity meters)
CAN3-C17-M84 (Canadian Specs for approval of electrical meters)
CAN3-Z234.4-79 (Canadian Specs for all-numeric dates and times)
FCC Certified Part 15.247
Industry Canada RSS 210
NOM 121-SCTI-1994

Application Information:

Frequency: 50 or 60 Hz +/- 5%
Nominal Voltage: 120-480 VAC ranging
Operating Voltage: 80-115% of nominal
Operating Temperature (Meter): -40 to +85 C under cover
Operating Temperature (UtiliNet Radio): -40 to +60 C under cover
Humidity (Meter): Less than or equal to 95% relative humidity, non-condensing
Humidity (UtiliNet): Rated 65° C at 90% relative humidity, non-condensing

Rated Accuracy at Unity Power Factor:

Transformer-Rated/Self Contained Meters: +/- 0.2%
K-Base Meters: +/- 0.5%

Over Voltage Withstand:

Temporary (.5 sec): 150% rated voltage
Continuous (5 hours): 120% rated voltage

Starting Load:

Class 20: 0.004 amps
Class 200: 0.050 amps
Class 320: 0.050 amps

Available Meter Forms:

S-Base: 3, 9/8, 45(5), 36(6), 29, 56 (Class 20); 2, 12, 25, 16/15/14 (Class 120, 200, 320**); 12, 16/15/14, and 27 (Class 480)
A-Base: 10/8, 45(5), 36(6) (Class 20); 16/15/14 (Class 120)
K-Base: 12, 16/15/14, and 27 (Class 480)
- *36S/36A replaces the traditional 6S/6A, 45S/45A replaces the traditional 5S/5A
- **Class 320 Meters are referred to as SE base

UtiliNet Specifications (General):

Frequency Range: 902-928 MHz
Channels: 240, 25kHz wide
Channel Spacing: 100 kHz
Raw RF Data Rate: 9600 bps
Spreading Technique: Frequency Hopping
Hopping Technique: Pseudo Random, Asynchronous
Hopping Patterns: 65,536 (Unique per Network)
Network Address: Latitude/Longitude Coordinates

UtiliNet Specifications (Receiver):

Type: Double Conversion Superheterodyne; 1st IF 45 MHz, 2nd IF 455 kHz
Dynamic Range: -104 to -20 dBm
Packet Error Rate: 1x10-2 (1x10-6 BER)
IF Selectivity: 6 dB down @ 30 kHz
45 MHz IF Rejection: <90 dB
Frequency Stability: 2.5 ppm (0.00025%) @ -30° to +75°; 5 ppm (0.0005%) @ -40° to +85°

UtiliNet Specifications (Transmitter):

RF Output Min (at antenna conn.): +17 dBm (50 mW)
RF Output Typical: +20 dBm (100 mW)
Out-of-Band Spurious Radiation: < -55 dBc (1kHz bandwidth)
Deviation: ±5.5 kHz ±10%
Module Bandwidth: 25 kHz
Modulation: Standard FSK
Output Impedance: 50 Ohms
Frequency Stability: 2.5 ppm (0.00025%) @ -30° to +75°; 5 ppm (0.0005%) @ -40° to +85°

Usage Features:

AMR Solution: Offers a low operational cost Advanced Metering Reading (AMR) solution.
Data Types: Supports cumulative, interval, registers, and event data.
Read Modes: Allows for on-demand or on-schedule reads.
Scalability: Supports deployments ranging from small to large.
Network Functionality: Devices can act as end devices and repeaters, increasing network coverage by adding more radios.
Meter Configurations: Available with various register types, including AX (active energy, Demand or TOU), AXR 32K/128K (active energy with load profile recorder), RX (active and reactive measurement, Demand or TOU), and RXR 32K/128K (active and reactive measurement with load profile recorder).
Optional I/O Board: Provides up to 2, form C, solid-state relays and up to one external input for recording pulses or real-time rate changes/self-read actuation. Note: The 4-relay option board is not available with the S4e UtiliNet meter.
Programming: The S4e UtiliNet meter is programmed using 1132Prog/1132Com software.
TOU Rates Schedule: Configurable Time-Of-Use (TOU) rates schedule with settings for AX/RX Only? and Schedule Relay?.
LCD Display: During communication, the LCD will flash P/R in the alphanumeric segments.

Maintenance Features:

Safety Warnings: Emphasizes critical safety precautions for operation, service, and repair, including warnings about hazardous voltages and the necessity of qualified personnel for all work.
Antenna Requirement: CAUTION: Do not operate the meter without an antenna attached, as operation without an antenna may cause permanent damage to the UtiliNet module.
Troubleshooting Guide: Provides common symptoms and possible causes for issues like a blank LCD display, UtiliNet not communicating, not connecting to host, or not sending load profiles.
External Antennas: Supports the use of external antennas for improved RF reception in challenging environments (e.g., ungrounded meter services, single-phase form 2S, floating 3-wire delta services, 12S and 45S/5S). Landis+Gyr offers an interface for remotely mounted antennas with a High Voltage antenna coupling system to protect UtiliNet components from transients up to 7,000 volts. Installation of approved external antenna solutions must follow Landis+Gyr Specifications.
Modular Design: The UtiliNet module occupies the communications board slot in an S4e meter, facilitating potential upgrades or replacements.
Meter Setup Verification: Requires specific programming of Relay 4 to "Load Control (LC)," "Used" in Normal Mode, and "Closed" in Normal Off State for the UtiliNet module to power up and operate correctly. A special tool, UtiliNet Radio Tool, is available to query and reboot the UtiliNet module.