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3 Installation
Compare model number and type with that specified on hy-
draulic schematic. The valve can be mounted in any position,
fixed or movable. The venting screw has to point upwards
(only for D638/9).
Mounting
surface:
(< 0.01 mm (0.00004 in) over 100 mm (3.94 in)) and finish
(R
< 0.8 µm). Care must be taken to ensure that contamina-
a
tion does not enter the hydraulic system, all work areas must
be clean of surface or air-borne contamination.
Mounting: Socket head screws (grade 10.9) according to
EN ISO 4762, torque diagonally alternating.
Pattern to
Series
ISO 4401
D636/8
03-03-0-05
D637/9-P
05-05-0-05
D637/9-R
05-05-0-05
4 Operating Pressure
Maximum operating pressure p
5 Electrical Connection
Electrical safety: The protective conductor connection is con-
nected to the electronics housing or valve body. The insulation
materials employed are designed for use in the safety extra-
low voltage range. The field bus circuit connections are only
functionally galvanically isolated from the other connected cir-
cuits.
To comply with safety regulations requires isolation from the
mains according to EN 61558-1 and EN 61558-2-6 and limiting
all voltages according to EN 60204-1. We recommend using
SELV/PELV power supplies.
Rated signal: See nameplate.
External fuse per valve: 2.0 A time lag (for D636/8) and
3.15 A time lag (for D637/9)
Valve phasing: A positive signal (D–E) for 6+PE connector or
(4–5) for 11+PE connector causes valve opening PA.
Connector wiring: See wiring schematic tag attached to elec-
tronics housing, or refer to the catalog or the installation draw-
ing.
Connection: Signal lines shielded, shielding connected at
both ends and additionally connected to reference potential
(0 V) at the control side (to improve EMC). Connect the protec-
tive conductor.
Observe technical note TN 353.
6 Hydraulic System Start Up
Pay attention to the pressure setting, the venting instructions
and the alarm messages!
7 Venting (only for D638/9)
WARNING
Hydraulic fluid squirting out
Hydraulic fluid squirting out under high pressure or
parts falling off can cause serious personal injuries,
burns and fires.
Only vent the valve and the actuator at a low sys-
tem pressure of max. 10 bar (145 psi).
Carefully open the venting screw by approx. one
revolution.
8 Null Adjustment
The null adjustment of the valve and further parameterizations
can be done via the field bus.
Page 2/2
Check
for
flatness
Socket
Torque
head screw
Pcs.
[Nm]
M5 x 55
4
6.8
M6 x 40
4
M6 x 60
4
: See nameplate.
P
9 Service
Replacing O rings: The mounting surface O rings may be re-
placed by the customer. Pay attention to cleanliness of the
valve and of the surroundings.
Transportation: Before transporting a valve the valve ports
have to be sealed with a clean shipping plate or adhesive tape.
Package the valve carefully to prevent damage during trans-
portation.
Repairs: Repairs may only be carried out by us or by our au-
thorized service centers.
Repaired valves or replacement valves are delivered like
new valves with factory settings. Therefore, the valves have
to be checked for correct configuration and changed parame-
terization before re-initiation. If necessary, the user has to re-
store the machine manufacturer's original configuration and
parameterization.
11
10 Disposal
11
It is essential to comply with the relevant national waste dis-
posal regulations and environmental protection provisions
when disposing of valves, spare parts or accessories, packag-
ing that is no longer needed, hydraulic fluid or auxiliary materi-
als and substances used for cleaning!
Mounting and Installation Notes D636/7/8/9 (B97072-636-001; Version E, 07/13)
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