411, 611 & 325 OCU
User Manual
11
9M02-8999-A001-EN
6 OCU Overview
6.1 General
These OCUs are globally compliant when supplied with an appropriate radio module for the region being used, for
non-standard applications additional regional or application specific certifications may be required. These units
have been designed with the latest generation safety electronics and firmware and exceed the safety related
systems requirements for ISO13849 Category 3 PLd for the stop function and when configured with specific
options, also for defined control functions.
OCUs are equipped with two internal antennae, one for 2.4GHz and the other for the sub-GHz link, the typical
operating range while dependent on the local environment is well in excess of 300 ft, with an open site
performance in excess of 750ft can be expected.
Should the OCU exceed the operating range and the signal be lost, all motions on the controlled machine will
cease.
OCUs have been approved to comply with the RF standards applicable to the region or country of use, there are
license exempt bands and license required bands.
In North America, the 915MHz band is license exempt (FCC Part 15 and Industry Canada RSS-210 standards).
In Europe and other regions, the typical license exempt band is 433-434 MHz, 869MHz; again, other licensed and
unlicensed frequency bands are available.
Globally the 2.4GHz band is generally available as license exempt with some technical variations.
The use of licensed bands including 450-470MHz will require an operating license but provide additional reliability
because they are protected from interference.
The OCUs are designed to be powered by two off the shelf AA batteries for the quoted 95 hours of nominal
operation (depending on configuration) and while the OCU would work with NiMH rechargeable batteries the
battery life monitoring would not be accurate and may lead to unexpected shutdown.
Status and feedback are provided by 6 LEDs and a Haptic vibration motor, the 6 LEDs are Status, Stop, A, B, 1
and 2; Status is a Tri-color, Stop, A, B, 1 and 2 are Bi-color, there is an ambient light sensor to adjust the intensity
based on background light levels.
The Stop LED shows the current availability of the Stop switch in line with the latest standards.
LEDs A, B, 1 and 2 locat
ed to the right and left of the ‘STATUS’ LED may be configured to indicate when an OCU
function command such as hoist select, or to provide status indication of machine state, via Talkback.
A Force Sensor provides continuous monitoring of OCU and freefall will safely blank functions if the OCU is
dropped. High G shock is logged to monitor for equipment abuse.
