LongRT Base Unit0 pages

Engineering SpecSheet
LongRT Base Unit (LBU)
Features
Rugged High-Impact Polymer Enclosure

Real-Time Clock

8-Character LED Display CAN Capable

16-Digital I/O, 2-AO, 2-AI

450MHz to 470MHz

Logging

Field Upgradeable

Removable Antenna

2-Form-C Relays

Weatherproof Design

2-Frequency Counters
WSLO-5544

The LongRT Base Unit (LBU) represents the next generation of Cervis configurable command and control machine-mounted units. Designed for safety, the LBU
employs a dual processor architecture compliant with ISO 13849 Category 3 Pld.
Versatile and configurable, the LBU enables complex command and control solutions in harsh environments and industrial applications.

Specifications
Max. Power Ratings
Operating Voltage

Form-C RELAY (Two, M17 & M18)
7 to 30VDC

Reverse Voltage Protection Up to -40VDC
Over Voltage Protection

Up to 60VDC

Operating Power

1W @ 12VDC

Max. Cont. I Sourcing

15A @ +55°C (all channels)

Environment
Operating Temp
Storage Temp
Humidity

-40 to +85°C
-40 to +85°C
0 to 100%

Max. Contact V

277VAC, 30VDC

Max. Contact I

8A max. switching @ 250VAC or VDC

Analog Output (Two, M19 & M20)
Voltage Range

0V to Input Voltage

Drive Current

30mA

Analog Input (Four, M21–M24)
Voltage Range

0V to Input Voltage

Input Impedance

10000

Analog Input (Two, M25 & M26)

Indicators
L1–L4

Available for application specific use

TX

Lit when message transmitted

RX

Lit when message received

LNK

Lit when safety-link is active

HB

Blinks during normal operation

Display

8-character LED

Frequency Counters

Serial Communications
CAN Protocol

SAE J1939/CANopen

RS-232 Port

Upgrade/Debug

Enclosure
Dimensions

cm: 21.59 x 16.31 x 5.715
inches: 8.75 x 6.42 x 2.25

Total Weight

0.680kg (1.5lbs)

Digital I/O (16)
Outputs

M1–M16

Type

High-Side switch

Max. Source I

4A

Frequency

450MHz to 470MHz

Avg. Source I

2A

RF Power

100mW (+20 dBm max)

One H-Bridge

M1 & M2

License

Certified FCC Part-90

Output Protection

Over current; under current; over temp.

Modulation

2-GFSK

PWM Frequency

0 – 1000Hz*

Range

Up to One Mile

M1–M16
Current sense

Antenna

External, RP-TNC 50 port

INPUT
Type
I Sense Threshold

Radio

5mA typical; 10mA max.

*1000Hz max. when a single channel is configured for PWM output. Increasing the number of PWM channels decreases the max. PWM
frequency.
** For best performance, do not connect antenna directly to the base unit. Instead, Cervis recommends to use an extension cable with an
antenna base plate mount.

LongRT Base Unit
February 9, 2015

©2015 Cervis, Inc.
S154.1.0-LBU