Main Characteristics Of E-Me-T Electronic Drivers - Hydro atos E-MI-AC Series Manual

3

MAIN CHARACTERISTICS OF E-ME-T ELECTRONIC DRIVERS

Power supply
(positive at contacts 2a, 2c)
(negative at contacts 4a, 4c)
Max power consumption
Current supplied to solenoids
Nominal reference signal, factory preset
Reference signal variation range
(internal scale adjust option)
Input signal impedence
Potentiometer supply
Ramp time
Enabling signal
Electrical wiring
Card format
Card connector
Connector elements available
Operating temperature
Front panel dimensions
Weight
Features
4 GENERAL SPECIFICATIONS
4.1 Power supply and wirings
The power supply must be appropriately stabilized or rectified and filtered. If the power supply is
generated by a single phase rectifier, use a 10000µF/40V capacitor; if pulse voltage is generated
by a three phase rectifier connect a 4700µF/40V capacitor (see
Connect the reference signal to the main electronic control by means of shielded and twisted
cables. Pay attention: the negative and the positive poles must not be exchanged each other.
Shield the wirings to avoid electromagnetic noise (EMC).
It is suitable to keep the driver and its cables far from any electromagnetic radiation source (like
cables where high currents flow, electric motors, transformers, relays, solenoids, portable radio-
transmitter, etc.).
Wire the earth connection as shown in
Connect the shield of the driver to the noiseless earth terminal (TE)
4.2 Reference signal
The electronic driver is designed to receive external voltage or current reference signals accor-
ding to .
5
Note that drivers suitable to receive current reference (option /I) have reference signal values in
the range 4 ÷ 20 mA.
4.3 Enabling signal
The digital signal on contact 8c allows to enable (24 V
ching off the power supply; use this signal to cyclically inhibit the driver or in emergency condi-
tions
4.4 Set code
Basic calibration of the electronic driver is factory preset according to the proportional valve it has
to be coupled with. These pre-calibrations are identified by a standard number in the model code
as follows:
DHZO-T-05* = DH05SA
DHZO-T-05*/B = DH05SA
DKZOR-T-15* = DK15SB
DKZOR-T-15*/B = DK15SB
DHZO-T-070 = DH06SA
DHZO-T-070/B = DH06BA
DKZOR-T-170 = DK16SA
DKZOR-T-170/B = DK16BA
DHZO-T-07* = DH07SA
DHZO-T-07*/B = DH07BA
DKZOR-T-17* = DK17SB
DKZOR-T-17*/B = DK17BB
For ex-proof valves, insert an "A" in the fifth digit of the code adjustment; for example, the code
adjustment for DLHZA-T is DH04AA (see table E120).
4.5 Calibration/settings available to the user, see
7
Scale , see
The Scale regulation, available on the card side, permits to modify the relation between the refe-
rence signal and the position or the regulated flow.
Modifying this regulation it is possible to fit the valve hydraulic behaviour to the effective system
conditions; in addition the two regulations available for double solenoid valves (driver E-ME-T-05H)
permit to set different hydraulic adjustments for positive and negative movements.
The Scale regulation is factory set in order to control the max valve opening with 100% of the refe-
rence signal (10V)
Bias, (dead band compensation).
The bias regulations, available on the front panel (P1, P2), permit to set the correspondence
between the electrical zero of the reference signal with the beginning of the valve's hydraulic regu-
lation, compensating the dead band and the component's mechanical tolerances .
Modifying this regulation (see
tive system conditions; in case of drivers for double solenoid valves (E-ME-T-05H) the bias are
active only when the reference signal is over the threshold value = ±200 mV.
This regulation is factory set at the standard values depending to the proportional valve to be con-
trolled and it is identified by the driver set code (see 4.4)
Ramps, see .
7 , 11 , 12
The ramp regulation, available on the front panel, permit to modify the time in which the valve rea-
ches the set opening value in front of a step change of the reference signal.
The ramp regulation is factory set at value close to zero and it can be increased up to 14 sec max
for a step change of the reference signal from 0% to 100%.
Stabilized
Rectified and filtered : V
50 W
Imax= 3,3 A square wave PWM type (for ex-proof valves Imax = 2,5 A)
E-ME-T-01H
E-ME-T-05H
for option /I
±10V (SW pos. 1) and ±5V (SW pos. 2)
Voltage Ri > 50K - (/I option Ri = 316 )
+10V / 10 mA at contact 10c and -10V / 10mA at contact 14c
14 sec. max (0 ÷ 100% of reference signal)
V = 5 ÷ 24V on contact 8c with led indicator on panel
DC
Coil:
Transducer:
Europa 100x160 mm (Plug-in unit DIN 41494)
Male DIN 41612 /D
Type E-K-32M frame snap connector (see table G800)
0 ÷ 50 °C (storage -20 ÷ +70 °C)
128,4 x 35,3 mm
520 g
Position control by PID action - Fast solenoid excitation and switching off.
Outputs to solenoids protected against accidental short circuits. Feedback cable break produces an inhi-
bition of the driver, zeroing the current and creating a fail-safe position in the valve.
Only for set codes TH* or TK*: circuit to make linear the regulation characteristic of the valve.
12 , according to CEI EN 60204-1 standards.
) or disable (0 V) the driver without swit-
DC
DPZO-T-17* = DP17SD
DPZO-T-17*/B = DP17BD
DPZO-T-27* = DP27SC
DPZO-T-27*/B = DP27BC
DPZO-T-37* = DP37SC
DPZO-T-37*/B = DP37BC
DPZO-T-67* = DP67SA
DPZO-T-67*/B = DP67BA
DLHZO-T-0* = DH04SA
DLHZO-T-0*/B = DH04SA
DLKZOR-T-1* = DK14SC
DLKZOR-T-1*/B = DK14SC
7 , 8 , 9 , 10
) it is possible to fit the valve hydraulic behaviour to the effec-
9 , 10
: 24V
DC
= 21 ÷ 33V (max ripple 2Vpp)
RMS DC
: 0 ÷ 10V at contact 12c (GND on 8a) (±10V option, see 4.4)
: ±10V at contact 12c (GND on 8a or 16c)
: 4 ÷ 20 mA at contact 12c (+) and 18c (-)
: 2 x 1 mm 2 to 20 m
: 4 x 0,25 mm 2 to 20 m
).
12
.
14
DLHZO-T-0*-T7 =TH04SA
DLKZOR-T-1*-T =TK14SC
DLHZO-T-T51 =TH06SA
LIQZO-T-162 =TQ16SA
LIQZO-T-252 =TQ25SA
LIQZO-T-322 =TQ32SA
LIQZO-T-402 =TQ42SA
LIQZO-T-502 =TQ52SB
QVHZO-T-06/* =QV0NSA
QVKZOR-T-10/* =QV1NSB
2 x 1,5 mm 2 shielded to 40 m
4 x 0,5 mm 2 shielded to 40 m
to be ordered separately
5 EXTERNAL REFERENCE SIGNALS
EXTERNAL CONNECTIONS
POTENTIOMETERS
SOLENOID S1 REFERENCE
SOLENOID S2 REFERENCE
SOLENOIDS S1 AND S2 REFERENCE
DIFFERENTIAL EXTERNAL REFERENCE
/I OPTION 4 ÷ 20 MA