Woodward 505HT, Installation And Operation Manual

Page: 39 / 199

Manual 35116 505HT for Pelton Turbines
Woodward 37
Hardware - Relay Outputs
This control provides (8) Isolated, Form-C Relay outputs with NO, COM, NC contacts available at the
terminal block.
Features
•
(8) Relay Output Channels
•
Each Relay Output provides NO, COM, and NC contacts
•
Each Relay Output channel provides a coil voltage readback fault
•
Woodward GAP block, diagnostics, and configuration support
•
Contact isolation maintained at terminal blocks
•
ATEX approved version available using hermetically sealed relays
•
GAP configurable update rates of 5 ms to 160 ms
Table 2-15. Specifications (RO)
Number of Channels: (8) relays
Contact Type: Form-C with NO, COM, and NC terminals
STD Relay, Contacts (DC): 5 A, 5-30 Vdc (resistive)
STD Relay, Contacts (AC): 2 A, 115 Vac (resistive)
STD Relay, Operate Time: < 15 ms typical
RELAY Coil Readback: Coil voltage readback status is available
RELAY Coil Rdbk Filter 1 ms approx at room temp
RELAY Output Isolation: 500 Vrms minimum to EARTH and all other I/O
RELAY Contact Isolation: 500 Vrms minimum between open contacts
RELAY to RELAY Isolation: 500 Vrms minimum between relays
IOLOCK State: Relay outputs are de-energized during power-up, power-down,
core voltage failures and watchdog failures
ATEX Version: The ATEX approved control uses a Hermetically sealed relay
ATX Relay, Contacts (DC): 5 A, 5-30 Vdc (resistive), 0.2-0.5 A (inductive)
ATX Relay, contacts (AC)**: 2 A, 115 Vac (resistive), 0.1-0.2 A (inductive)
Explosion Hazard
**ATEX/IECEx Compliance requires relay contact loads be limited to
< 32 Vac rms / < 32 Vdc.
Figure 2-12. Relay Output Block Diagram
Released