TAC Pneumatic Products Catalog

R504 Series (2354 Series)
TAC PNEUMODULAR � Diverting Relays
The R504 Series diverting relays are snap-acting
devices designed for a variety of switching and
interlocking functions in pneumatic control
systems where the applications may require one or
more of the following functions: feeding and
exhausting branch lines, diverting a supply line to
either one of two branch lines or diverting either
one of two supply lines to one branch line.
Features:
• All R504 Series Relays provide positive two-position
snap-action. No main air connection required.
• Some competitive relays, that are claimed to be
snap-acting, are not.
• R504-1 and R504-2 are the same relay with different
factory settings; provide SPDT pneumatic switching.
• R504-3 and R504-4 are the same relay with different
factory settings; provide DPDT pneumatic switching (switch
two separate pneumatic circuits simultaneously).
• Switching point adjustable with 1/16 in. hex wrench.
• All ports clearly labeled. Ports align with MCS-S terminals.
• TAC PNEUMODULAR: Mounts on MCS-Socket or K503
Mounting Bracket.
Model Chart
Model No.
Wholesale
Model No.
Specifications
Switching
Action
Range
psig
R504-1 2354-501 a
4 to 8
SPDT
R504-2 2354-502a 18 to 22
R504-3 2354-503 a
4 to 8
DPDT
R504-4 2354-504a 18 to 22
a Includes two plastic mounting straps and adhesive backed mounting plates.
92 © Copyright 2006 TAC. All Rights Reserved. F-27383-1
Action
Below 4 psig: NO and C are connected.
Above 8 psig: NO and C are connected.
Below 16 psig: NO and C are connected.
Above 20 psig: NC and C are connected.
Below 4 psig: NO and C are connected. NO2 and C2 are connected.
Above 8 psig: NC and C are connected. NC2 and C2 are connected.
Below 16 psig: NO and C are connected. NO2 and C2 are connected.
Above 20 psig: NC and C are connected. NC2 and C2 are connected.
Control action Refer to Active Connections Table.
Construction Glass-filled nylon.
Maximum ambient temperature 140�F (60�C).
Supply air pressure Clean, dry, oil free air required (Ref. EN-123).
Maximum 30 psig (207 kPa).
Connections Barbed nipples for 1/4 in. O.D. polyethylene or 5/32 in. I.D. polyurethane tubing.
Air flow capacity 60 scfh (1.7 scmh).
Adjustments
M NC NO C S
The differential band (fixed at 4 psig) switch-over point may be adjusted between 4 to 8 psig and
18 to 22 psig respectively by means of 1/16 in. hex wrench.
Mounting
Designed for use on MCS-S manifold socket. This device can also be surface mounted by using the
K503 mounting bracket.
Dimensions 4-1/8 H x 1-31/32 W x 2-61/64 D in. (105 x 50 x 80 mm).
R504
Series
(2354
Series)