6
Unison
®
ERn Rack Mount Enclosure Installation Manual
Maximum Current Input
The ERn enclosure draws a maximum current of 3 amps when fully populated.
Rack Mounting Specifications
An ERn configured for installation in a 19” equipment rack requires 5U of rack space for an ERn2 and
8U of rack space for an ERn4. ERn enclosures are provided with rack mounting brackets attached to
the ERn enclosure at shipment. The locking door attaches to the equipment rack for a secure
installation.
Dimensions and Weights
Installation Environment Requirements
• For your safety, you should install a circuit breaker cabinet or other readily accessible input power
disconnect device in the same area as the Unison ERn enclosure. Breakers not in the same room
must have a physical means to be locked off.
• A clean (not dusty), temperature controlled environment with the following conditions:
• ambient temperature of 32-104°F / 0-40°C
• ambient humidity of 10-90%, non-condensing
• Restricted public access to prevent tampering.
• All CE equipment is tested to EMC category B environment.
Enclosure
Type
Height
Width
Depth
Product
Weight
Shipping
Weight
inches
mm
inches
mm
inches
mm
lbs
kgs
lbs
kgs
ERn2-RM w/
rack door
8.8
223
19
483
9.6
244
16.6
7.7
20
9.1
ERn4-RM w/
rack door
14.1
358
19
483
9.6
244
23.8
11
25
11.3
CAUTION:
HVAC systems must at all times maintain the specified ambient temperature
at the Unison ERn enclosure.
