Carel mastercella User Manual

58
ENGLISH
ir33 +030220441 - rel. 2.0 - 01.05.2006
8.1 Summary table of alarms and signals: display, buzzer and
relay
The following table describes the alarms and signals on the controller, with their description, the status of
the buzzer, the alarm relay and the reset mode.
Code Icon on the display Alarm relay Buzzer Reset Description
rE
fl ashing
on on automatic virtual control probe fault
E0
fl ashing
off off automatic room probe S1 fault
E1
fl ashing
off off automatic defrost probe S2 fault
E2
fl ashing
off off automatic probe S3 fault
E3
fl ashing
off off automatic probe S4 fault
E4
fl ashing
off off automatic probe S5 fault
‘___’ No off off automatic probe not enabled
LO
fl ashing
on on automatic low temperature alarm
HI
fl ashing
on on automatic high temperature alarm
AFr
fl ashing
on on manual antifreeze alarm
IA
fl ashing
on on automatic immediate alarm from external contact
dA
fl ashing
on on automatic delayed alarm from external contact
dEF
on
off off automatic defrost running
Ed1 No off off automatic/manual defrost on evaporator 1 ended by timeout
Ed2 No off off automatic/manual defrost on evaporator 2 ended by timeout
Pd
fl ashing
on on automatic/manual maximum pump down time alarm
LP
fl ashing
on on automatic/manual low pressure alarm
AtS
fl ashing
on on automatic/manual autostart in pump down
cht No off off automatic/manual high condenser temperature pre-alarm
CHT
fl ashing
on on manual high condenser temperature alarm
dor
fl ashing
on on automatic door open too long alarm
Etc
fl ashing
off off automatic real time clock fault
EE
fl ashing
off off automatic E²prom error, unit parameters
EF
fl ashing
off off automatic E²prom error, operating parameters
HA
fl ashing
off off automatic HACCP alarm, HA
HF
fl ashing
off off automatic HACCP alarm, HF
rCt No off off automatic instrument enabled for programming from the remote control
Add No off off automatic automatic address assignment procedure in progress
Prt No off off automatic printing report
LrH No off off automatic activation of low relative humidity procedure
HrH No off off automatic activation of high relative humidity procedure
ccb Signal start continuous cycle request
ccE Signal end continuous cycle request
dFb Signal start defrost call
dFE Signal end defrost call
On Signal switch ON
off Signal switch OFF
rES Signal reset alarms with manual reset
reset HACCP alarms
reset temperature monitoring
n1 - n6
fl ashing
on on automatic indicates an alarm on unit 1-6 in the network.
dnL Signal download in progress
d1 - d6
fl ashing
off off download with errors on unit 1-6.
Tab. 8.a
The buzzer sounds if enabled by parameter H4.
The alarm relay is activated if auxiliary output 1 (H1) has been assigned the alarm relay function.
Note: the buzzer is not affected by the CAREL supervisory system.
8. ALARMS AND SIGNALS

Carel mastercella Specifications

General

Series	Mastercella
Front Protection	IP65
Protection Rating	IP65 (front)
Control Type	PID, ON/OFF
Display	LCD
Inputs	NTC, PT1000
Outputs	Relay, SSR
Storage Temperature	-30°C to +70°C
Analogue Outputs	4-20 mA, 0-10 V
Serial Communication	RS485, Modbus RTU
Relative Humidity	<90% RH non-condensing