EXCEL 12 MODULES
EN1B-0201GE51 R0905C
6
Binary Outputs
The triac outputs or relay outputs can be configured for
different functions.
Example: Floating Drives
You can choose to use two triac outputs or two relays to
connect a floating drive (no mixing of triac outputs and relays
allowed). Once the outputs have been configured using
Honeywell's LNS plug-in, floating actuators can be directly
connected to them.
Relay Outputs
The Excel 12 is equipped with up to two change-over relays
and up to three normally-open relays.
Hardware Limits
•
A min. current of 50 mA is required to ensure a reliable
contact.
•
The normally-open contacts are designed for a max.
continuous current of 6 A. The normally-closed contacts
are designed for a max. continuous current of 1 A.
•
The max. combined allowable current flowing through all
relays simultaneously is 24 A (continuous).
•
The max. peak in-rush current (20 ms) at the normally-
open contact is 80 A.
NOTE:
If inductive components are to be connected to the
relays and if these relays switch more often than
once every two minutes, they must be prevented
from causing harmful interference to radio or tele-
vision reception (conformance with EN 45014).
NOTE:
Fluorescent lamps with electronic control gear often
have high switching currents. To reduce this
switching current, you could use current limiters (e.g.
EBN2 Schalk electronics) or install 10 m cable
(25 mm
2
) between the Excel 12 controller's relays
and the electronic ballast. If the analog input of a
dimmable electronic load is not a protective low-
voltage signal or if the analog signal is wired in the
same cable as the dimmable electronic ballast's
power supply, the Excel 12 system ground must be
earthed.
Triac Outputs
The Excel 12 is equipped with up to six triac outputs.
Hardware Limits for Excel 12 with Line Power Supply
•
Low signal: 0 V; high signal: 24 Vac
•
Maximum 250 mA
continuous current in sum for all triac
outputs together
•
550 mA for max. 10 sec.
•
cos
ϕ
> 0.5
Hardware Limits for Excel 12 with 24 Vac Power Supply
•
Low signal: 0 V; high signal: 24 Vac
•
Maximum 500 mA
continuous current in sum for all triac
outputs together
•
800 mA for max. 10 sec.
•
cos
ϕ
> 0.5
Analog Inputs
The Excel 12 is equipped with up to seven analog inputs, all
of which can be configured as slow binary inputs (in which
case the signal must be stable for at least 1.25 seconds) for
the detection of slow signals (e.g. from a window contact).
The analog inputs are configured using Honeywell's LNS
plug-in.
Table 2. Analog input usage
analog input voltage
NTC
wall module
AI1 X
X
humidity
AI2
4
X
room
temperature
1
AI3
4
fan speed or bypass
2
AI4
4
set-point
3
AI5 X
X
AI6
5
X
AI7
4
X
X
1
For all NTC inputs, temperatures of
≤
-50...-45 °C are interpreted as
being due to a sensor break, and temperatures of
≥
+145...+155 °C
are interpreted as being due to a sensor short-circuit.
2
A contact open for
≥
10 seconds is interpreted as a sensor failure.
3
A resistance of > 15 k
Ω
is interpreted as being due to a sensor
break, a resistance of < 100
Ω
is interpreted as being due to a
sensor short-circuit.
4
Not supported by the W7704E1005
5
In the case of the W7704D1024 and W7704E1005, AI6 is not a true
analog input, but rather is suitable for reading input from LESST
wall modules, only
Analog Outputs
The Excel 12 is equipped with two 0...11 Vdc analog outputs
(with the exception of the W7704E1005, which supports only
a single such analog output), each of which can drive a max.
of 1.1 mA.