Radio Crane Control Systems0 pages

Hubbell Industrial Controls, Inc.

Radio
Crane
Control
Systems
Hubbell Radio Remote Control Systems
Catalog 31.100 • September 2000
Replaces: Brochure 31100 of June 96
Catalog Sheet 31100 AC Compact Radio
Catalog Sheet 31100 Diagnostic Display
Catalog Sheet 31132 License-Free Radio

31.110 – AC Compact Style
with Micro-Controller

Hubbell Radio Control Systems use the latest
micro-controller technology and ultra reliable
Manchester II (bi-phase) digital FM signal
coding. Each radio control system operates on a
licensed frequency in the 72 to 76 MHz or the
450 to 470 MHz bands.
The security of any remote control system is of
the utmost importance. Hubbell radio control
systems’ security is enhanced through multiple
checks before any function can become
operational:

31.120 – DC Compact Style
with Micro-Controller

• The received signal must be of the proper
frequency.
• The received message must have the proper
address and must be in the correct format.
• The receiver calculated CRC code must be
identical to the CRC code calculated by the
transmitter and sent as part of each message.
• The preceding items must be met and all
transmitter lever switches must be centered
before the Crane Main Contactor can be
energized.
• To continue or change an energized function,
requires the receipt of a “valid message”
prior to timeout of the message timer. If no
valid message is received, the system turns off
all outputs.

31.130 AC License-Free
with Belt-Clip Transmitter

• Two separate “watchdog timers” assure that
all outputs are switched off in case of a
receiver malfunction.
HUBBELL