Emerson Fisher 377 Instruction Manual page 3

Instruction Manual
D200319X012
Table 1. Specifications
Available Configurations
377 Trip Valve: Includes check valve, but no volume
tank: user configured for locking position. For field
use or replacement.
When supply pressure falls below the trip point,
377D Trip Valve: Fails actuator piston down. Includes
check valve and volume tank.
377L Trip Valve: Locks actuator piston in the last
position.
377U Trip Valve: Fails actuator piston up. Includes
check valve and volume tank.
377CW Trip Valve: Fails fully clockwise to close valve.
Requires check valve and volume tank. Trip valve
moves piston to either up/down position and requires
actuator configuration for actual clockwise
movement.
377CCW Trip Valve: Fails fully counterclockwise to
close valve. Requires check valve and volume tank.
Trip valve moves piston to either up/down position
and requires actuator configuration for actual
counterclockwise movement.
All 377 Trip Valves can be converted to any of the
above fail modes with minor hookup changes
Allowable Supply Pressure for Trip Valve
Maximum: 10.3 bar (150 psig)
Minimum: 3.8 bar (55 psig)
Outlet Pressure
Normal Operation: Pressure from control device
Fail‐Up or Fail‐Down Mode: Maximum volume tank
pressure
Lock‐In‐Last‐Position: Respective cylinder pressure
(2)
Trip Point
Adjustable from a minimum of 2.8 bar (40 psig) to a
maximum of 72 percent of supply pressure;
see figure 4
Reset: 12.5 to 33 percent above adjusted trip point
(3)
Flow Coefficients (C )
v
Depends on flow path (shown in figure 3) as follows:
Port A to Port B and Port D to Port E: 0.5
Port B to Port C and Port E to Port F: 0.6
Pressure Connections
1/4 NPT internal
Temperature Capabilities
Nitrile Diaphragms and O‐Rings: -40 to 82_C
(-40 to 180_F)
Fluorocarbon Diaphragms and O‐Rings: -18 to 104_C
(0 to 220_F)
Volume Tank Maximum Internal Working Pressure
(for 377D, 377U, 377CW and 377CCW trip valves)
Standard: 10.3 bar (150 psig) for non‐ASME approved
applications. See note on page 7.
ASME Approved Applications: Rated 10.3 bar (150
psig), maximum; 9.3 bar (135 psig), recommended.
See note on page 7.
Hazardous Area Classification
Complies with the requirements of ATEX Group II
Category 2 Gas and Dust
(1)
377 SST
Safety Instrumented System Classification
SIL 3 capable - certified by exida Consulting LLC
Mounting
Top‐Mounted: Manifold‐mounted between a Fisher
3570 positioner and 480 actuator (manifolds cannot
be supplied with Fisher 585C, 685, 1061, 1066, and
1069 piston actuators)
Side‐Mounted: Yoke‐mounted or bracket‐mounted
for use with a FIELDVUE
DVC6200p, DVC6000 or DVC6000f digital valve
controller
Approximate Weight
Trip Valve
Mounting Manifold: 0.5 kg (1.2 pounds)
Volume Tank: Varies between 5.4 and 363 kg (12 and
800 pounds) depending on size
-continued-
(1)
™ DVC6200, DVC6200f,
Aluminum: 0.95 kg (2.1 pounds)
SST: 2.31 kg (5.1 pounds)
377 Trip Valve
June 2017
3