(APPENDIX III) DIMENSIONS, WIRING AND MECHANICAL PARTS | PAGE 98
ELECTRICAL CHARACTERISTICS
Symbol Parameter Conditions
Mini-
mum
Typi-
cal
Maxi-
mum
Unit
Power supply (terminals 8÷33V, –BAT)
8÷33V Power supply voltage 8 33 VDC
I
BAT
Supply current 8÷36 V=12 V 133 mA
I
BAT
Supply current 8÷36 V=24 V 83 mA
P
BAT
Power consumption 2 W
I
BAT
Supply current
8÷36V=12V
heater
1.12 A
I
BAT
Supply current 8÷36 V=24 V 540 mA
heater
P
BAT
Power consumption 13.5 W
CAN Bus (terminals CANS, CANL, CANH)
V
IN
Input voltage in CANH and
CANL
-58 +58 V
DR
CAN
Baud rate 50 Kbps
PNP digital inputs (terminals MAN, AUTO)
V
IN
Input voltage -0.7 33 V
V
IL
Low level input voltage 1 V
V
IH
High level input voltage 5 V
I
IL
Low level input current V
IN
= 0V 0 100 uA
I
IH
High level input current V
IN
= 12V 0.8 1 mA
Environmental conditions and protection of the enclosure
To Operating temperature -20 +60 ºC
H
R
Relative humidity No condensation 80 %
IP Degree of Protection *see note1 65
NOTE 1:
IP 65 on the front of the control unit when installed on the control panel with
the sealing gasket provided.
The equipment has been designed and manufactured according to the require-
ments of the directives and harmonized standards which are applicable for com-
pliance with EC regulations.
To power the CEA7 device and make the other connections you should use a ca-
ble with a section of 1 mm
2
.
The CEA7 device is mounted on the front of an electrical panel. There are no
special ventilation requirements due to the low power consumed by the device.
The CEA7 device has a CAN terminator activation switch of 120 Ω active in ON
position.
INPUTS AND OUTPUTS
Signal Description Type Characteristics
POWER SUPPLY
8÷33V
Positive battery
terminal
Power supply
Module supply voltage from 8
to 33 V
-BAT
Negative battery
terminal
Power supply Module supply negative
MAN Manual Input Start up PNP digital input
AUTO Automatic Input PNP digital input
CAN Bus
CANS CAN bus screen CAN Bus CAN communication
CANL L signal of CAN bus CAN Bus CAN communication
CANH H signal of CAN bus CAN Bus CAN communication