EC3-33x Coldroom Controller with EX5
User Manual
EC3-33x
A.6.5.063E - Rev 4
23
Emerson Electric GmbH & Co - ALCO CONTROLS - Heerstr. 111 - D-71332 Waiblingen - Germany - Tel.: ..49 (0) 7151 509 0 - Fax: 49 (0) 7151 509 200
Digital Input Object
The digital input object controls the switch inputs. If the object is disabled no network variable update will be performed.
Network Variables
Variable Type
Name
Type
Meaning
SNVT_lev_disc
nvoDI[]
O
Status of input switch, ST_ON = closed, ST_OFF = open
Configuration Parameters
The digital input object has no configuration properties.
Alarm Messages
The digital input object will not generate alarm message
Digital Output Object
The digital output object controls the relays and the TRIAC. If the object is disabled the object will not react on any network variable
update and the digital outputs will stay unchanged.
Network Variables
Variable Type
Name
Type
Meaning
SNVT_lev_disc
nviDO[]
I
Logical status of relay or TRIAC
SNVT_lev_disc
nciInvert[]
C
Logic of the output, ST_OFF = positive logic, ST_ON = negative logic
Configuration Parameters
The configuration network variable “nciInvert[]” defines the logic for the output relays or the TRIAC.
If the value is ST_OFF the output is in positive logic. That means a ST_ON on the input will activate the relay/TRIAC.
If the value is ST_ON the output is in negative logic. That means a ST_OFF on the input will activate the relay/TRIAC.
Alarm Messages
The digital output object will not generate alarm message
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