EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101
18
Digital Outputs
Technical Description
The digital outputs are switched by a triac that can be
connected directly to an external relay.
Technical Specification
Number:
Six digital outputs
Output stages:
Low signal
0 V
High signal
24 Vac
Type
Close, only
Load:
Per output
min. 0.01 A
max. 0.8 A
Total
max. 2.4 A
Cos
ϕ
0.5 to 1
IMPORTANT
The digital outputs are protected against short
circuit current via internal fuse, but they are not
protected against overload. All digital outputs are
protected via one fuse, only; if any digital output is
short-circuited, the fuse will be blown and will
interrupt the main power. In that case, the con-
troller does not work. If the CPU is running into the
WATCHDOG caused by a software or hardware
error, all digital outputs will be set to low signal,
which means all digital outputs are inactive.
Beginning with V2.04.00 firmware, the online point attribute
Normally Open / Normally Closed (NO/NC) defines the
relation between the physical state (relay on/off) and its
logical status. See Table 11.
Table 11. Digital Output Parameters.
Relay
ON/OFF
NO/NC
attribute
Logical
Status
Output
Voltage
On
NO
1
24V
Off
NO
0
0V
On
NC
0
0V
Off
NC
1
24V
Connection Examples
Fig. 31. Digital outputs, connection of relay.
Fig. 32. Digital outputs, direct connection of 3-position
actuators.
