Main distribution frame system COM 91-2

q	Dimensions according to ETSI norm
q	Compact design results in higher connection density
q	The racks are flexible in their vertical/vertical design
q	Suitable for all KRONE switching equipment (copper, coax, fibre optic)
q	Delivered unassembled

The main distribution frame system is designed for 10-pair LSA PROFIL modules on both the system and line sides (it can be modified for 8-pair LSA PROFIL modules).
In this frame model the insertion slots for the modules on the line and system sides are arranged vertically above each other on a single fixed profile frame. This layout makes jumpering possible within the same vertical. The standard frame comes with 250 mm spacing between verticals; it is available in a 2-vertical version.
MDF COM frames consist of powder-coated (colour: grey; RAL 7032) steel sections, the fixed profile frames are made of stainless steel. All the components of the frame and profile frames and the frame accessories are connected to a common earth potential.
Connection points for an FPE cable (min. cross section: 50 mm² copper) to the main earth conductor are accessible at the top and bottom bars of the frame.
The connection capacity of a distribution frame totals 1200 pairs (2 x 600 pairs) for the system and line sides. Distribution frames can be combined to form banks of any length. Note, however, that the horizontal jumpering capacity is about 3200 pairs (jumper diameter 0.9 mm) and vertical jumpering capacity is about 1300 pairs (jumper diameter: 0.9mm).

The MDF COM 91-2 can be configured for the following design variants:

q	Wall-secured standing frame (free-standing distribution frame, secured to the wall - see illustration)
q	Free-standing distribution frame, single-sided (free-standing distribution frame, secured to the ceiling)
q	Free-standing distribution frame, double-sided (free-standing distribution frame, secured to the ceiling, bolted back to back).

The following table gives an overview of the MDF COM series:

Order

data:

Order No.	Item	Description		piece
		MDF components	Wall-secured standing frame 2 verticals	Free-standing frame, single-sided 2 verticals	Free-standing frame double-sided 2 verticals
6971 1 023-00	1¹⁾	MDF COM 91-2, 2 verticals	1	1	2

¹⁾  The scope of delivery of the MDF includes the following kits and individual parts:
   - fixed-profile frame F10
   - wall-fixing kit (for solid walls)
   - floor-fixing kit (for bare floors)
   - cable guide kit
   - cable fixing kit
   - jumper guide kit, vertical
   - fishplate kit
   - MDF COM 91-2 label
   - label for FPE connection

Additional accessories required

Order No.	Item	Description		piece
		MDF Accessories	Wall-secured standing frame, singel-sided 2 verticals	Free-standing frame, single-sided 2 verticals	Free-standing frame double-sided 2 verticals
6971 2 412-10	2	Jumper guide for through-jumpering	-	-	1
6971 2 420-00	3	Bolts for back-to-back set-up	-	-	1
6971 2 263-01	4	Ceiling fixing rail, for 2 verticals, height 1500mm	-	1	1
6971 2 223-00	5²⁾	Kick-bar kit, for 2 verticals	1	1	2
6971 2 228-00	6³⁾	Kick-bar termination kit	1	1	2
6971 2 202-00	7⁴⁾	Frame termination kit

²⁾    Item is to be installed as required.
³⁾    Item includes components for a travelling-ladder stop at the ends of a bank of distribution frames.
⁴⁾    Item is used for the ends of a bank of distribution frames, if necessary.