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Data visibility for better machine performance
The Nimbus IoT collates signals from industrial equipment for
processing and publishing to the Cloud. Designed for monitoring
small machines and automation systems it enables data visibility
for determining machine health or process eciency. Industrial
grade digital inputs, relay contacts and analog process (4–20mA)
input channels easily link process sensor inputs and standalone
legacy automation such as PLCs, variable frequency drives and other
discrete control systems to Industrial IoT cloud services.
Collect eld operating data from your machine
Nimbus IoT built-in cloud interface sends data from your machine
directly to the Cloud – useful for facilities maintenance monitoring,
replenishing consumables and remote diagnostic monitoring.
Nimbus IoT
Edge Processing Interface
Direct wireless interface to eld process inputs
Nimbus IoT converts, conditions and processes analog signals directly to wireless WiFi
(801.11) or (eMTC) LTE Cat-M1. No additional wireless modem required.
Easily integrates with your existing automation equipment
The Nimbus IoT natively supports MQTT Industrial IoT communications protocol. ModBus RTU master/slave communication port directly interfaces to metering and control automation. Application use cases include AMR (automatic
meter reading), monitoring of remote asset productivity, energy consumption, and consumable supply tank levels.
Nimbus onboard logic engine allows customization tailored to specic measurement and monitoring requirements.
Extra cloud interface security and Store and Forward data integrity
Connection and data security are paramount so the Nimbus IoT provides peace of mind with Transport Layer
Security (TLS 1.2) protocol. In the event of a network communications failure the Nimbus IoT Store and Forward
function buers data locally, forwarding to the cloud server once network communications are reinstated, securely
monitoring and recording with total data integrity.
Key features:
›
DCS Define Cloud Services (DCS) connection
›
MQTT with Transport Layer Security (TLS 1.2)
›
Data record store and forward record buffer
›
RTC record data time stamp at origin
›
Application logic and math functions
›
PC configuration tools, USB interface
›
Wireless WiFi (801.11) or (eMTC) LTE Cat-M1
›
2 Process (4–20mA) inputs
›
4 Digital inputs
›
3 Relay outputs
›
1 logic output (Open collector)
›
RS485 ModBus RTU master/slave interface
›
Local display (RS232C) interface port
›
AC mains and 24V low power operation
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Cloud connection options
WiFi (801.11)
WiFi connection enables LOS transmission of up to 1500 (450m) using the supplied 3dBi wireless
antenna.
(eMTC) LTE CAT-M1
4G cellular interface developed specically for Internet of Things (IoT) and machine-to-machine (M2M)
communications.
Connection to IoT Cloud services
The Nimbus IoT is precongured to connect to Dene Cloud Services (DCS). Custom connection is available to
connect to your own or third party IoT server. Cloud communication connection is secured using TLS and uses MQTT
IoT service transfer protocol. JSON packets contain industry standard SenML (Sensor mark-up language) data.
Simple setup with Dene WorkBench
Dene WorkBench congures the Nimbus IoT enabling easy setup
of analog and digital inputs, alarms, totalizers and counters, custom
scaling for easy input linearization and scale setup. The cloud interface module congures data transfer to a cloud server.
Download WorkBench for free at
deneinstruments.com/workbench
Dene Instruments Bridge Key - USB PC connection to
Nimbus IoT Edge Processing Interface.
Ordering Codes for Nimbus IoT
Model/Option Description
NIMBUS IoT
Nimbus IoT processor module base conguration: MQTT cloud
service interface – TLS security layer, store and forward record
buer, RTC data time stamp, 2x analog (4-20mA) process input
(non-isolated), 4x digital input, 1x logic output (open collector,
80mA) 2x form A, 1x form C relay contacts (16A)
85-265 V AC/DC power supply
10-32 V DC power supply
No Wireless communication
Cellular modem (eMTC) LTE Cat-M1
WiFi (801.11)
No RS232/485 communications
RS232/485 communications (isolated) - Modbus RTU master/
slave, ASCII and local display (RS232C) interface port
Example conguration
Nimbus IoT processor module base conguration, 85-265V
AC/DC power supply, cellular modem (eMTC) LTE Cat-M1,
R232/485 comms
Model Power
supply
NIM2
HV
LV
NIM2 HV CM1 RS
Wireless
Comms WiFi/
LTE
–
CM1
WIF
RS232/485
Comms
option
–
RS
Required Accessories (Sold Separately)
BRIDGE-KEY
USB Bridge Key, required to program this instrument using free WorkBench soware.
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Case Dimensions
")
Label Side (Right)
N
N
Nimbus
Radio
Status
3.98" (101mm)
4.29" (109 mm)
Mode
23mm
(.91")
5.75" (146mm)
120mm (4.72")
Terminals with Connectors in
112mm
(4.41")
Terminals with Connectors in
35mm
DIN
Rail
101
mm
(3.98
23
mm
(.91")
Connectors
1 2 3 4 5 6 7
Color Label Facing Up
E F G H
13 14 15 16 17 18 19 20 21
Color Label Facing Down
(A & B) Relay outputs
(C) Logic output open collector
(D) RS485 Port
(E) Analog inputs
(F) R232 Display Port
(G) Digital inputs
(H) Power supply (HV shown)
22 23 24 25 26 27
10 11 128 9
28 29
DI
Rail
DI
Rail
Warranty
Dene Instruments warrants that its products are free from defects in material and workmanship under normal use and service for a period of ve years
from the date of shipment. Dene Instruments' obligations under this warranty are limited to replacement or repair, at its option, at it's factory, of any of
the products which are returned to Dene Instruments' facility (within the applicable period aer shipment), transportation charges prepaid, and which
are, aer examination, disclosed to the satisfaction of Dene Instruments to be defective.
Warranty does not apply to any equipment which has been repaired or altered, (except by Dene Instruments), or which has been subjected to misuse,
negligence or accident. In no case shall Dene Instruments' liability exceed the original purchase price. The aforementioned provisions do not extend the
original warranty period of any product which has been either repaired or replaced by Dene Instruments.
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General specications
Power
Power supply 85–265V AC (HV)
10–32V DC (LV)
Power consumption 10W max, 6W
typical
Excitation output
24V DC @ 200mA maximum. Total on
all +24V output pins
Data Logging
31,774 samples with up to 30 parameters plus time stamp per sample. 32
MB capacity
Available with Real-Time Clock (RTC)
option
RTC time base UTC
Local time in device with automatic
daylight savings adjustment
Analog input
2x (4–20mA) process input
Input resolution 12 bits
Accuracy <±1.0% FSO (unless other-
wise stated in input specications)
Input isolation: Not isolated to
power supply or digital inputs
General specications
Linearity & repeatability <±0.1% FSO
RF immunity <±1% eect FSO typical
Noise immunity (CMRR) 160dB
tested at 300V RMS 50Hz
Permanent memory (E2ROM)
100,000 writes per input parameter
Relay output
1 x Change over Form C Relay (15A
250V AC or 15A 30V DC)
2x Form A Relays (3A 250V AC or 3A
30V DC)
Digital input
4 x Digital inputs
Functions Status, up counter, up/
down counter with direction,
debounced counter, frequency,
gated frequency
Counter register output 32 bit
Frequency range 0–10,000Hz
(Reduced to 0–1,000Hz in Sleep
Mode)
Input types NPN, PNP, Clean
Contact, Voltage 2–30V DC
Threshold 1.65V typical
Debounce counter range 0–100Hz
Isolation: Not isolated to power
supply or analog inputs
Comms
Protocols Modbus RTU, RS485 or
Dene ASCII, EIA485 compliant
Default comm port RS485. Selectable baud rate 2400–230400 baud
Format 8 bit, no parity, 1 stop bit
RS232 display port meets TIA/EIA232-F and ITU v28 standards
Functional isolation: 1,500VDC (1
min) Electrical isolation 42VAC/ DC
(continuous)
Programming
USB programmable Via 'PC Setup'
port using Bridge Key USB programmer (sold separately)
Dene WorkBench Simple conguration using Dene WorkBench:
deneinstruments.com/workbench
Wireless comms interface
WiFi (801.11)
Cellular modem (eMTC) LTE Cat-M1
Regions NA, E1 and AU
TLS security protocol
Over Air Updates
Over The Air updates are available
for main plugins, custom macros,
certicates, cloud adapter rmware
updates (WiFi and cellular)
MQTT interface
Based on MQTT 3.1.1 with QoS 0 & 1
Construction
Casing DIN 35 rail mounting;
Material: ABS inammability V0
(UL94)
Phoenix type removable screw terminal connectors
Dimensions (H x W x D)
3.98 x 0.91 x 4.72"
(101 x 23 x 120mm)*
*Excludes antenna and connectors
Required mounting height with
antenna
4.29" (109mm), WiFi model only
Environmental conditions
Operating temperature –40 to 176°F
(–40 to 80°C)
Storage temperature –40 to 176°F
(–40 to 80°C)
Operating humidity 5–85% RH max,
non-condensing
Compliance approvals
EN-61326-1:2006
EMC: EN61326-1: 2006 Class A
EN61326-1: 2006 Industrial Locations
EN50581: 2012 RoHS
Safety: EN61010, 1:2010, CuL (le
listing pending)
Logic output
1 x Logic output Open collector,
(80mA maximum capacity)
Transport Layer Security (TLS) V1.2
with server certicate and X.509
client certicate authentication
Email: sales@deneinstruments.com | Dene Instruments Inc, 11516 Forest Heights Drive, Dallas, TX 75229
NIM-SDS-191001 v1 © Dene Instruments
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