Technical Manual: TM50567
Optica 30/40/50 series
Revision: 4.0
Date of release: 2019-01-23
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www.vareximaging.com
4.
Electrical specification
This chapter described the electrical specifications of the collimator. Information regarding electrical
connection can be found in §4.1, §4.2 and §4.3. Description of interfaces can be found in §4.4, §4.5.
Section §4.6 describes EMC compatibility.
Fuses
The collimator is equipped with an auto resettable fuse to protect the collimator for too high power
consumption. Resetting is done by a power OFF - ON cycle.
The collimator has no replaceable fuses.
In case of a suspected broken fuse and a power cycle does not result in a functional collimator, the
main board is broken, and the collimator needs to be returned to Varex Imaging Nederland B.V. for
repair.
Power Supply
The power supply must be connected to the Power and Communications connector, see §3.6. See
§9.1 for electrical ratings.
Mains isolation
The collimator shall only be connected to secondary circuit voltages (see §9.1 for the max. electrical
ratings) of an IEC60601-1 compliant ME system which are separated from the mains supply by 2
Means Of Patient Protection (2MOPP). A connection to supply mains is not applicable for the
Collimator.
Earthing
The collimator shall be connected to Protective Earth. A PE-terminal is provided for connecting the PE
wire, see §3.6 for the location.
CAN interface
There is no isolation barrier between CAN-bus which is intended to be connected to the internal
electronics of a medical X-Ray system. Any other isolation requirements must be provided by the
medical X-Ray system according IEC60601-1.
The CAN-bus is not intended to be a SIP/SOP, but must be seen as an internal bus of the X-Ray
system. If the intention is to use the CAN-bus as a SIP/SOP, additional isolation has to be provided.
Housing interface
The collimator provides 2 MOPP of insulation between the electronics and the outside of the housing.
