Digital Outputs; Technical Description; Technical Specification - Honeywell Excel 50 Installation Instructions Manual

EXCEL 50 INSTALLATION INSTRUCTIONS
The analog outputs are protected against overvoltage
up to 24 Vac and 35 Vdc.
Supply:
Several relay modules can be connected in series via the
bridged terminal pair:
24 Vac: Terminals 11/12 of the relay
24 Vac (-): Terminals 13 to 16 of the relay
Fig. 27. Analog outputs, connection of relay MCD 3
MCD 3:
Relay terminal 17 controls the changeover contact K3.
Relay terminal 18 controls the ON contacts K1, K2.
Ground can be looped through terminals 2/3.
Fig. 28. Analog outputs, connection of relay MCE 3
MCE 3:
Relay terminal 16 controls the ON contact K3.
Relay terminal 17 controls the changeover contact K2.
Relay terminal 18 controls the changeover contact K1.
EN1B-0101GE51 R1105D

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
High signal
Type
Load:
Per output
Total
Cos ϕ
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
only a single fuse; if any digital output is short-
circuited, the fuse will be blown and will interrupt the
main power. In that case, the controller does not
work. If the CPU is running into the WATCHDOG as
a result of 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
ON
OFF
ON
OFF
16
0 V
24 Vac
Close, only
min. 0.01 A
max. 0.8 A
max. 2.4 A
0.5 to 1
NO/NC attribute logical status
NO
NO
NC
NC
1
0
0
1