Manual 26727
VariStroke-I (VS-I) Electro-hydraulic Actuator
Woodward
10
North American Compliance:
These listings are limited only to those units bearing the appropriate marking. Review the Compliance
Code table for more information.
CSA:
Certified for Class I, Div.1 Groups C, D T4 or Class I, Div. 2 Groups A, B, C,
D T4. For Use in Canada and the United States. Certificate 2669905.
Special Conditions for Safe Use
Wiring must be in accordance with North American, European, or other International wiring methods as
applicable, and in accordance with the authority having jurisdiction.
For Zone 1 or Division 1: Conduit seals must be installed within 18 inches (457 mm) of the conduit entry.
Field wiring must be suitable for at least +85 °C and 10 °C above the maximum fluid and ambient
temperatures.
The maximum hydraulic oil temperature is 70 °C continuous.
The following have a maximum constructional gap (ic) less than that required by Tables 1 and 2 of EN
60079-1 and hence are as detailed below:
Table RC-1. Linear Electro-Hydraulic Actuator, Model VariStroke-I
Flame Path
Max Gap, ic (mm)
Comment
Min. width of joint L
(mm) Comment
Spool to Spacer
0.079
13.46
Sleeve to Spacer
0.079
12.85
Sleeve to Sleeve
0.048
14.76
Sleeve to Housing
0.076
15.85
Sensor to Plate
0.08
36.25
Plate to Housing
0.10
22.91
Plate to Housing
0.10
20.22
Plate to Plate
0.10
22.91
Connect external safety ground terminal to earth ground.
Compliance with the Machinery Directive 2006/42/EC noise measurement and mitigation requirements is
the responsibility of the manufacturer of the machinery into which this product is incorporated.
Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this
equipment may generate an ignition-capable level of electrostatic charge. Therefore, do not install the
equipment in a location where the external conditions are conducive to the build-up of electrostatic charge
on such surfaces. Proper grounding when used in a fixed installation mitigates this risk. In addition, only
clean the equipment with a damp cloth.
Transient protection for the VariStroke-I is to be provided externally by the end user. The transient
protection device is to be set at a level not exceeding 140% of the peak rated voltage.
The installation of the VariStroke-I shall only be within a Pollution Degree 2 environment as defined in IEC
60664-1.
Released