FR515 IMO PRECISION CONTROLS, FR515 Datasheet - Page 7

• Manufacturer Part Number: FR515
• Description: LIMIT SWITCH, COMPACT, ROLLER
• Manufacturer: IMO PRECISION CONTROLS

Specifications of FR515

• Contact Voltage Ac Max: 500V
• Contact Voltage Dc Max: 600V
• Contact Current Ac Max: 6A
• Contact Current Dc Max: 6A
• Switch Terminals: Screw
• Svhc: No SVHC (15-Dec-2010)
• Actuator Type: Roller Piston Plunger
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FR/FM/FX/FZ/03/03
Compact Heavy Duty Limit Switches
FM/FR/FZ/FX
Glossary
Lift-style switches
EXAMPLES
The following is a glossary of terms in specifying actuator characteristics:
Operating force (OF)
The force applied to the actuator required to operate the switch contacts.
Releasing force (RF)
The value to which the force on the actuator must be reduced to allow the
contacts to return to the normal position.
Total force (TF)
The force applied to the actuator required to reach the stopper from the free
position.
Free position (FP)
The initial position of the actuator when there is no external force applied.
Operating position (OP)
The position of the actuator at which the contacts snap to the operated
contact position measured with respect to the centres of the mounting holes.
Releasing position (RP)
The position of the actuator at which the contacts snap from the operated
contact position to their normal position.
FR538 or FR938 + VFLE543
FM538 or FM938 + VFLE543
Turret type 38 (without reset button)
Lever type VFLE543 (fixed position roller)
Pre-travel = 30˚
Three lever options, all with or without manual reset button.
FZ and FX models also available with a choice of turret and lever.
Age-resistant and oil-resistant rubber rollers.
Lever position adjustable over 360˚ in 10˚ increments.
Head rotatable in 90˚ increments.
Glass-reinforced thermoplastic resin models (FR and FX) double insulated
for electrical safety.
continued
FR538 or FR938 + VFLE553
FM538 or FM938 + VFLE553
Turret type 38 (without reset button)
Lever type VFLE553 (single adjustment roller)
Pre-travel = 30˚
Total travel position (TTP)
The position of the actuator when it reaches the limit of travel – must not be
exceeded.
Pretravel (PT)
The distance or angle through which the actuator moves from the free
position to the operating position.
Overtravel (OT)
The distance or angle of the actuator movement beyond the operating
position.
Movement differential (MD)
The distance or angle from the
operating position to the releasing
position.
Total travel (TT)
The sum of the pretravel and overtravel
expressed by distance or angle.
Note: Types with reset button have non-removable contact block due to
interlocking with reset mechanism.
FR538-71 formerly FR581
Die-cast metal alloy models (FM and FZ) include earth terminal.
FR538-71 + VFLE554
VFLE554
Turret type 38-71 (early trip point with reset button)
Lever type VFLE554 (dual adjustment roller)
Pre-travel = 30˚
Additional travel to latching point -0˚/+8˚
FP
TTP
OP
www.imopc.com
OF
PT
OP
Operate
PP
FM538-71 +
OT
MD
PT
RF
PT
MD
TTP
MD
Release
TT
AP
OP
RP TT
TTP
RF TF