Manual 26727
VariStroke-I (VS-I) Electro-hydraulic Actuator
Woodward
55
Response Time: Less than 2 ms
On-state Saturation Voltage: Less than 1 V @ 500 mA
Off-state Leakage Current: Less than 10
μ
A @ 32 V
Isolation: 500 V (ac) from digital ground and chassis
Wiring Requirements:
•
Keep this and all other low level signal cables separated from input power cables to avoid
unnecessary coupling (noise) between them.
•
Wire Gauge Range: (0.25 to 1.5) mm
²
/ (16 to 22) AWG
•
Shielding: these outputs are unshielded, however the wires should be kept in a twisted configuration
for noise immunity.
CAN Communication
CAN communication is not yet available in current VS-I models.
The VS-I has (2) CAN ports.
Figure 3-22. CAN Ports Connections
CAN Specification:
•
Interface Standard: CAN 2.0 A/B (configured in the CPU)
•
Network Connections: (2) separate connectors
•
Network Isolation: 500 V (ac) to chassis, input power, I/O channels, between CAN ports
•
Network Termination: (121 ±10)
Ω
built into the each port of VS-I
•
Cable / Part Number: 2008-1512 (120
Ω
, 3-wire, shielded twisted pair)—Belden YR58684 or similar
VS-I CAN Ports
VS-I
CPU
CAN1 Port
(NOT USED)
121
Ω
CAN2
XCVR
121
Ω
34
33
32
31
30
29
28
27
26
25
24
23
CAN2 Port
(NOT USED)
CAN1
XCVR
Released