EXCEL 12 MODULES
EN1B-0201GE51 R0905C
2
terminal protection
cover (optional)
terminal protection
cover (optional)
swivel label
holders (optional)
Fig. 1. Excel 12 housing (side view)
DIN Rail Mounting/Dismounting
The unit can be mounted onto a DIN rail simply by snapping it
into place and securing it with a stopper to prevent sliding. It
is dismounted by gently pulling the stirrup located in the base
of the housing (see Fig. 2).
eyelets for
cable binders
eyelet for
cable binders
eyelets for
cable binders
screwing nose
(round hole)
stirrup;
pull to dismount
from rail
screwing nose
(oval hole)
Fig. 2. Housing base (view from below)
Wall/Ceiling Mounting/Dismounting
round hole
(diameter: 4 mm)
short housing: 100 mm; long housing: 154 mm
sh
ort hou
sing
: 10
0 mm
long h
ous
ing: 1
00 mm
oval hole
(4x7 mm)
Fig. 3. Drilling template (view from above)
The unit can be mounted on walls or ceilings in any
orientation desired. In the case of ceiling mounting, however,
it should not be operated at ambient temperatures exceeding
45 °C. The unit is mounted by inserting 3.5-mm dowel screws
through the corresponding screwing noses.
Optional Use of Terminal Covers
After mounting the Excel 12 onto the wall or ceiling, provide
for cable access by snipping out the terminal protection
covers' cut-out tabs and snap (by hand) the covers (available
in packs of 8) into place onto the housing. To remove a cover,
place a screwdriver in the leverage slot (see Fig. 9 on page 7)
and pry it loose.
Terminal Assignment
The terminal blocks are arranged on two sides of the
controller: the relay side and the low-voltage side.
•
The relay side consists of a single row of terminal blocks
for the connection of cables to the relays. In the case of
models with line (i.e. 100 Vac or 230 Vac) power supply,
the line power is also connected on this side.
•
The low-voltage side consists of two rows of terminal
blocks for the connection of cables to all other input /
outputs. In the case of models with 24 Vac power supply,
the 24 Vac power supply is also connected on this side.
NOTE:
According to VDE guidelines, it is not allowed to mix
low-voltage and high-voltage signals on the relays.
NOTE:
For controlling thermal actuators, we recommend
using the 24 Vac models, which provide more
current.
Every Excel 12 is equipped with a terminal assignment label
on the top of the housing (see Fig. 4). The terminal assign-
ment label is a plastic part displaying the maximum
complement of I/O's.
The small sticker in the upper left corner provides model-
specific information, e.g. the date code, the type of power
supply, that terminals 36-38 (triac outputs 5 and 6) are not
connected, and that terminals 1, 2, 22, and 23 may be used
as 24 Vac output terminals, only (secondary side of the built-
in transformer).