Atos DKI 01714 / 23 Valve

4
MAIN CHARACTERISTICS OF DKI, DKU AND DKOR DIRECTIONAL VALVES
Assembly position / location
Any position for all valves except for type - 170* (without springs) that must be installed with horizontal
axis if operated by impulses
Commissioning
For correct AC operation, the valve must be full of hydraulic fluid, otherwise some vibrations may
occur. In this case fill the valve with oil by opening the screw , see sketch at section 10 and 11 .
A check valve on T line aids to keep valve full.
Subplate surface finishing
Roughness index
0,4
flatness ratio 0,01/100 (ISO 1101).
Ambient temperature
from -20°C to +70°C.
Fluid
Hydraulic oil as per DIN 51524 .... 535; for other fluids see section .
Recommended viscosity
15 ÷ 100 mm2/s at 40°C (ISO VG 15 ÷ 100).
Fluid contamination class
ISO 19/16, achieved with in line filters at 25 µm value to β25 ≥ 75 (recommended).
Fluid temperature
T ≤ 80°C if T ≥ 60°C select /PE seals
Flow direction
As shown in the symbols of tables and .
Operating pressure
Ports P,A,B: 315 bar;
Port T with port Y plugged: 120 bar for DKI; 160 bar for DKU and 210 bar for DKOR;
On port T pressure up to 315 bar are allowed if port Y is drained;
For versions with proximity switches (/FI/NC and /FI/NO versions) port Y must be drained
Rated flow
See diagrams Q/∆p at section .
Maximum flow
100 l/min for DKI and DKU; 120 l/min for DKOR, see operating limits at section .
Relative duty factor
100%
Supply voltage and frequency
See model code at section .
Supply voltage tolerance
± 10%
5
NOTES
1
Options A = Solenoid mounted at side of port B (only for single solenoid valves). In standard versions, solenoid is mounted at side of port A.
WP = prolonged manual override protected by rubber cap (standard for DKOR models).
L, L1, L2, L3, LR, see section 10 = device for controlling switching time (only for DKU and DKOR models). Not available for valves with connectors
E-SA or E-SE. For spools 4, 4/8, 5/1 only device L1 is available.
F * = with proximity switch for monitoring spool position: see tab. E110.
2
Type of electric/electronic connector with connector DIN 43650 to be ordered separately
SP-666 = standard connector IP-65 for direct connection to electric supply source.
SP-667 = as SP-666, but with built-in signal led.
SP-669 = with built-in rectifier bridge for supplying DC coils by alternate current (AC).
E-SA = electronic connector (only for DKI and DKU valves) which improves performances and give faster shifting times for DC solenoid supplied
by AC power.
E-SE = electronic connector (only for DKI and DKU valves) which improves performances and reduces power consumption for DC solenoid supplied by DC power.
E-SR = electronic connector which permits switching of solenoid valves by a low power signal (max 20mA).
E-SD = electronic connector which eliminates electric disturbances when solenoid valves are de-energized.
Note: disturbance suppressor devices, similar to E-SD are, standard, built in all E-SA, E-SE, E-SR.
3 Spools spools type 0/2, 1/2, 2/2 are only used for two position valves: single solenoid valves, type DK*-163*/2; double solenoid valves type DK*-170*/2
and DK*-175*/2.
spools type 0 and 3 are also available as 0/1 and 3/1 that, when in centre position, oil passage from ports to tank are restricted.
spools type 1,4 and 5 are also available as 1/1, 4/8 and 5/1. They are properly shaped to reduce water-hammer shocks during the swiching.
Note that the configuration of spool 5/1 is inverted in respect with spool 5: see section .
spools type 1,3 and 1/2 are also available as 1P, 3P and 1/2P to limit valve leackage.
Other types of spools can be supplied on request.
6
ELECTRIC FEATURES
Valve
External supply nominal voltage (1) (2)
DIRECT CURRENT
DKI and DKU ALTERNATE CURRENT
DKI
ALTERNATE CURRENT
DIRECT CURRENT DKOR ALTERNATE CURRENT
6 DC 12 DC 24 DC 48 DC 12 DC 24 DC 110/50 AC 120/60 AC 230/50 AC 230/60 AC
110/50 AC 120/60 AC 230/50 AC 230/60 AC 110/50 AC (3) 120/60 AC 230/50 AC (3)
230/60 AC 12 DC 24 DC 110 DC 220 DC 110/50 AC 120/60 AC 230/50 AC 230/60 AC
Type of Power connector consumption (4) SP-666 or SP-667 E-SE
E-SA
SP-669
SP-666 or SP-667 SP-666 or SP-667
SP-669
52 W
13 W (5) 105 VA (6) 95 VA (6) 105 VA (6) 95 VA (6) 58 VA 53 VA 58 VA 53 VA
110 VA (7)
40 W 46 W 46 VA 42 VA 46 VA 42 VA
Code of spare coil (8)
Colour of coil label
SP-CAU-6DC/ 80 SP-CAU-12DC /80 SP-CAU-24DC /80 SP-CAU-48DC /80 SP-CAU-6DC /80
SP-CAU-12DC /80
brown green red silver brown green
SP-CAU-24DC /80
red
SP-CAU-48DC /80
silver
SP-CAU-110RC /80
gold
SP-CAU-230RC /80 SP-CAI-110/50/60AC /80 SP-CAI-120/60AC /80 SP-CAI-230/50/60 AC /80
SP-CAI-230/60AC /80 – – – – – – – –
blue yellow white light blue silver – – – – – – – –
(1) Tolerance on the nominal voltage is ± 10%.
(2) Other supply voltages are available on request: 28DC, 110DC, 125DC, 220DC,
48/50/60 AC.
(3) Coil can be supplied also with 60 Hz of voltage frequency: in this case the performances
are reduced by 10÷15% and the power consumption is 55 VA.
(4) Average values based on tests performed at nominal hydraulic condition and ambient/coil
temperature of 20°C.
(5) In a cycle, where solenoid is energized/deenergized in 1 second (1 Hz), the average
power consumption is 13 W; for longer cycles, the power consumption is lower.
When solenoid is energized the inrush current is 9 A at 12 VDC and 6 A at 24 VDC corresponding to power consumption peak of 130 W.
These current peaks persist for a period shorter than 100 msec and they must be
considered when electric circuit is designed.
(6) When solenoid is energized the inrush current is 7 A at 110 VAC and 3,5 A at 230 VAC;
the power consumption peak is 800 VA;
these current peaks persist for a period shorter than 40 msec and they must be considered when electric circuit is designed.
(7) When solenoid is energized, the inrush current is approx 3 times the holding current.
Inrush current values correspond to a power consumption of about 350 VA.
(8) Protection class H; Duty cycle: 100%.
Connector protection degree: IP 65.