280
Adjustment spindle(s) location
Auto reset
Manual reset
KP 1A, 2A, 5A
KP 1A, 5A
Manual tripping
(Electrical contacts/wiring test)
TRIP (main lever)
use FINGERS ONLY!
(Do NOT use screwdriver)
Note:
KP 1A and KP 5A w/man. reset:
Push manual reset knob during manual
tripping.
Wiring
CAUTION: Disconnect power supply before
wiring connections are made to avoid
possible electrical shock or damage to
equipment.
All wiring should conform to the National
Electrical Code and local regulations.
Terminal block
CAUTION: Use terminal screws furnished
in the contact block.
Use tightening torque 20 lb. in (2.3 Nm).
Use copper wire only.
Contact load ratings
Load Option A
CUT-OUT on pressure drop
Wire terminals 1-4:
CUT-IN = High Set Point (HSP)
see “Setting”
CUT-OUT = Low Set Point (LSP)
see “Setting”
Terms 1-4 close on pressure rise
Terms 1-4 open on pressure drop
Example:
CUT-IN
= 30 psig
CUT-OUT = 10 psig
This means CUT-IN
= HSP = 30 psig
and
CUT-OUT = LSP = 10 psig
Note:
= Bellows movement on pressure rise
Ø
= Bellows movement on pressure drop
The free terminal can be used for signal
purpose.
Load Option B
CUT-OUT on pressure rise
Wire terminals 1-2:
CUT-IN = Low Set Point (LSP)
see “Setting”
CUT-OUT = High Set Point (HSP)
see “Setting”
Terms 1-2 close on pressure drop
Terms 1-2 open on pressure rise
Example:
CUT-IN
= 250 psig
CUT-OUT = 350 psig
This means CUT-IN
= LSP = 250 psig
and
CUT-OUT = HSP = 350 psig
120 V a.c.
16 FLA, 96 LRA
240 V a.c.
8 FLA, 48 LRA
240 V d.c.
12 W pilot duty
Manual reset
To resume control operation after safety
cutout, push reset knob as indicated.
Note:
KP 1A, man. reset is possible only after a
pressure rise of 10 psi (0.7 bar).
KP 5A, man. reset is possible only after a
pressure drop of 43 psi (3.0 bar).
Bellows
Bellows
Diff.
(fixed)
KP 1A:
10 psi (0.7 bar
KP 5A:
43 psi (3 bar)
