MSA 9020 LCD User Manual

Control Unit Models 9010 LCD and 9020 LCD
8
General Information
MSA
GB
3 General Information
3.1 Technical characteristics of the control module
Electrical power supply 115/230 VAC ± 15% 50/60 Hz
24 VDC +15% -20%
No-load consumption Model 9010 Model 9020
AC power supply with 24 VAC 13 VAC 15 VAC
Power supply in dc of 24 VDC 3 W 4 W
Sensors/transmitters power supply
Constant current 5500 mA 5500 mA
Constant voltage 324 VDC 324 VDC
Connection mode of the sensors/transmitters 2, 3 and 4 conductors
Terminal board for conductors up to 2.5 sq. mm
Input signals 10200 mV DC
420 mA
Analogue output signals
In regular operation 020 / 420 mA [selectable]
In non-regular operation 0 / 2 / 4 / 20 mA / frozen [selectable]
Signal isolated to ground
Serial interface RS485 Half duplex with dedicated
protocol Mod-Bus RTU
Alarm Set points No. 3
[CAUTION - WARNING - ALARM]
Electrical characteristics related to the
remote repetition of the alarms
Via relay contacts 5A@ 24 VDC / 250 VAC,
resistive load
Via common collector/emitter opto-isolators 30 mA, 24 VDC max, resistive load
Failure and negative drift indication
Via relay common to the two channels with model 9020
Via individual opto-isolators for each channel
Alarm management
Reset mode 1 or 2 - automatic or manual
Activation delay 09999 seconds
Automatic blocking Within the Access Codes
Manual blocking Via the related Access Code
Response speed [without sensor] < 0.5 sec. for the 100 % f.s.
Zero and span drift [without sensor] < ±0.5 % f.s. ±1 digit/month
Precision [without sensor] ±1 % f.s. ±1 digit
Operating temperature -10 °C  +50 °C
Storage temperature -20 °C  +75 °C
Humidity 90 % RH non condensing
Vibration 10  55 Hz; 0.15 mm

MSA 9020 LCD Specifications

General

Brand	MSA
Model	9020 LCD
Category	Control Unit
Language	English