Contemporary Control Systems EXP Expansion Modules User Manual - Manual (Page 11)

The MOD HUB has been tested to
EN55024 Generic Immunity
Standard–Industrial Environment. This standard identifies a
series of tests requiring the equipment to perform to a particular
level during or after the execution of the tests. The three classes
of performance are defined by CC as follows:
Class A
— Normal operation, however, occasional
reconfigurations may occur or throughput reduced due to error
recovery algorithm by the ARCNET data link level protocol.
Class B
— Throughput reduced to zero and continuous
reconfigurations occur. Normal operation resumed after
offending signal removed.
Class C
— Complete loss of function. Unit resets and normal
operation restored without human intervention.
At no time did the MOD HUB fail to return to normal operation
or become unsafe during the execution of these tests.
A copy of the Declaration of Conformity is in the appendix.
2.3 Flange Mounting
The MODHUB-16 is also available in a flange mount
(MODHUB-16F) for mounting to a panel board or subpanel.
Make sure the MODHUB-16F flanges are mounted onto a
vertical surface to ensure proper airflow to the MOD HUB. If
desired, the four mounting feet located at the bottom of the
enclosure can be removed using a small screwdriver.
2.4 MTG-RAK
— Rack Mounting Kit
Both the MODHUB-16 and MODHUB-48 can be installed in
standard EIA 19" racks using the MTG-RAK rack mounting kit
occupying 7" of vertical rack space. Either one MODHUB-16
(16E), two MODHUB-16s (16Es) side-by-side, or one
MODHUB-48 can be mounted using one rack mounting kit. To
install the MOD HUBs to the shelf provided with this kit,
simply remove the four rubber feet and attach the MOD HUB
directly to the shelf using the screws from the rubber feet. Be
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