Digital electronic E-BM-AS drivers
DIN-rail format, for proportional valves without transducer
E-BM-AS
Digital drivers control the current to the
solenoid of Atos proportional valves without
transducer, according to the electronic
reference input signal.
The solenoid proportionally transforms the
current into a force, acting on the valve
spool or poppet, against a reacting spring,
thus providing the hydraulic regulation.
E-BM-AS can drive up to two single or one
double solenoid proportional valves.
Electrical Features:
• 4 fast plug-in connectors
• RJ45 connector for RS232 Serial com-
munication to program the driver with the
Atos PC software
• 4 leds for diagnostics (see section
)
• ±5 V
DC output supply for external referen-
ce potentiometers (/P option)
• Electrical protection against reverse pola-
rity of power supply
• Operating temperature range: -20 ÷ +60 °C
• Plastic box with IP20 protection degree
and standard DIN-rail mounting
• CE mark according to EMC directive
Software Features:
• Intuitive graphic interface
• Setting of valve’s functional parameters:
bias, scale, ramps, dither
• Linearization function for the hydraulic
regulation
• 2 selectable modes for electronic reference
signal: external analog input or internal
generation
• /W option max power limitation function
• Complete diagnostics of driver status
10
2
BLOCK DIAGRAM
G030
RS232
CONNECTOR
CMD1
DGND
CMD2
REFERENCE
GENERATOR
LOGIC
CMD-
ENABLE input
STATUS output
DC/DC
CONVERTER
POWER
SUPPLY V+
POWER GND
MICROCONTROLLER
DRIVER STATUS
CURRENT TO
SOLENOID S1
CURRENT TO
SOLENOID S2
EARTH
REFERENCE S1
E-SW
programming
software
DI1
DI2
DI3
DI4
RAMPSLINEARIZ.
BIAS
SCALE
TWO SINGLE SOLENOID VALVES DOUBLE SOLENOID VALVE
POWER SUPPLY
SOLENOID S2
VALVE’S ELECTRICAL CONNECTORS
RAMPSLINEARIZ.BIASSCALE
D
C
A
B
RampsBiasScale
SOLENOID S1
REFERENCE S2
1
2
3
4
1
2
3
4
1
2
3
4
2
1
4
3
Linearization
Internal
Rererence
Generator
SINGLE SOLENOID VALVE
01H
Electronic
reference
input signals
Current
supply to
solenoids
ON/OFF
inputs
Enhanced
Diagnostic
Hydraulic
Power
Limitation
(option /W)
RJ45
LEDS:
1
MODEL CODE
01H = for single solenoid proportional valves
05H = for double solenoid or two single solenoid
proportional valves
-
AS = digital basic driver,
for valves without transducer
Series number
Options:
- = standard 24 VDC power supply
12
= 12 VDC power supply
A = max current limitation for ex-proof valves
C = current feedback 4 ÷ 20 mA for
remote transducer, only for IW
I = current reference input 4 ÷ 20 mA
(omit for standard voltage reference
input ±10 V
DC)
P = electrical supply for external potentio-
meters to generate reference signal,
not available with I option (see 4.4)
W = power limitation function, only for 05H
(see 7.7)
/
PS = Serial communication interface
E-BM
AS PS
01H *
-
-
*
05H
05H
Only for 05H
Table G030-8/E
Off-board electronic driver
in DIN rail format
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