Ross Controls CATEGORY 4 - 5_2 VALVES CROSSMIRROR SERIES 77 - Manual (Page 7)

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5/2-Way Double Valves
with C ROSS M IRROR ® -Sensing
Valve response times
Valve No.: 7776A3400 and 7776A3401 5/2 Nominal diameter 10
7776A4400 and 7776A4401 5/2 Nominal diameter 15
Solenoid operated: 230V / 50Hz
Test pressure: 3; 6 bar
Work ports 2 and 4 are closed without volume.
Response times in ms 1)
Flow direction Pressure 7776A.... 7776A....
3400 3401 3400 3401 4400 4401 4400 4401
3 bar 6 bar 3 bar 6 bar
ENERGIZED 1 to 4 rising 34 40 25 28 47 41 34 35
Normal function 2 to 3 falling 30 34 26 27 45 38 35 31
DE-ENERGIZED 1 to 2 rising 29 44 44 39 61 62 60 60
Normal function 4 to 5 falling 38 39 40 37 59 57 62 62
ENERGIZED
Abnormal function
1 to 2 rising 50 47 53 46 54 59 70 63
Side A 2) 4 to 5 falling 45 50 52 49 50 56 56 57
ENERGIZED
Abnormal function
1 to 2 rising 41 47 46 57 64 56 52 52
Side B 3) 4 to 5 falling 28 54 47 53 61 57 55 67
1) Response time: ENERGIZED - average time required to fill volume to 90% of supply pressure.
DE-ENERGIZED - average time required to exhaust volume to 10% of supply pressure.
2) 3) In case of malfunctions due to differing actuation functions of pilot valves or/and the main valve systems of valve side A or B.
Flow characteristics (k
v
-values)
Flow direction Function Function
Normal Abnormal Normal Abnormal
Side „A“ Side „B“ Side „A“ Side „B“
1 to 2 1,8 1,4 1,8 2,78 2,0 2,78
1 to 4 1,5 – – 2,95 – –
2 to 3 1,4 – – 2,34 – –
4 to 5 2,4 1,8 1,8 6,26 3,65 3,13
Valve No.: 7776A3400 & 7776A3401
with sub-base D996C91
Inlet G 1/2; Outlet G 3/8 Valve No.: 7776A4400 & 7776A4401
with sub-base D1049C91
Inlet G 3/4; Outlets G 1/2 - G 3/4
k
v
- values