Special Instructions For Safety Instrumented Systems - Emerson Fisher FIELDVUE DVC6200 HW1 Quick Start Manual

Quick Start Guide
D103556X012

Special Instructions for Safety Instrumented Systems

DVC6200 SIS instruments are identified by an SIS label on the terminal box cover. Refer to the
further information regarding the design, installation, and operation of the DVC6200 SIS product.
The following section illustrates typical installation scenarios for a DVC6200 SIS. The digital valve controller can be
configured to trip on low current (de­energize to trip, DETT) or high current (energize to trip, ETT). See figure 28 for
the DIP switch configuration of this action on the printed wiring board. This setting is preconfigured at the factory
when ordered properly.
Figure 28. DIP Switch Location
PT-PT/
MULTI-DROP
SELECTION
X0436
Table 2. DIP Switch Configuration
Switch Label
PT-PT
Multi
Hardware Shutdown
Hardware Shutdown
Trip Current Low (DETT)
Trip Current High (ETT)
1. Refer to figure 28 for switch location.
Note
DVC6200 SIS instruments in PT­PT mode require the Hardware Shutdown Switch be Enabled for FMEDA failure rates to be valid for
4-20 mA operation.
WARNING
When Hardware Shutdown is enabled, the instrument will respond to a signal change regardless of instrument mode. The
valve may move in an unexpected direction when power is applied to the digital valve controller. To avoid personal injury
and property damage caused by moving parts, keep hands, tools, and other objects away from the valve/actuator assembly
when applying power to the instrument.
BACK OF PWB
ASSEMBLY SUB‐MODULE
(1)
Operational Mode
4­20 mA Point­to­Point Loop
24 VDC Multi­Drop Loop
Enabled
Disabled
De-energize to trip
Energize to trip
DVC6200 Digital Valve Controllers
Safety manual
DE-ENERGIZE TO TRIP
ENERGIZE TO TRIP
SELECTION
DIP Switch Position
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
August 2015
SIS
for
35