S S
Start
MS
OL
M
L1
L2
L3
Fuses
AC C NC NO
MS
MS
OL
Stop
AC NO NC C
AC
AC
C
NO
NC
NC
NO
C
S S
5"
4.5"
2.25"
.375"
2.5"
3"
Pick-Up
Drop-Out
De-Energized
1 millivolt
Energized
Pick-Up
Drop-Out
De-Energized
1 millivolt
Energized
Specifications
Electrical
Input Voltage: 115VAC ±10%
Frequency: 50/60Hz
Set Point Range: Adjustable
Adjustable: 40 to 400 millivolts
Differential: 1 millivolt, Approx.
Overvoltage:
Accepts up to 600 Volts on signal terminals
Signal impedance:
100,000 Ohms, Minimum
Response Time: Pick-Up of Relay with
Decreasing Voltage: 0.5 Sec. Fixed
Power Consumption: 5VA
Output Contacts:
1/3 HP @ 120/240VAC
10 Amps @ 120VAC
100,000 Full Load Cycles
50,000,000 Mechanical Cycles
Ordering Information
R-K Model
Series
600 - 600 Volts
Dimensions
Zero Speed Switch
Physical
Mounting: Surface
Termination: Screw Terminals
Packaging: Open Printed Circuit Board
Weight: 11 oz. Approx.
Ambient Temperatures
Operating: 0°C to 65°C
Storage: -30°C to 85°C
ZVM - 600 N
Connections
For Zero Speed sensing the ZVM should
be connected to the line voltage on the
load side of the starter (MS).
M = Motor MS
OL = Overloads
Fuses = ≤1 amp (optional)
Options
N -Signal AC/DC
Non-Polarized
P - Signal DC Only
Polarized
R - Reverse Operation
Non-Polarized
= Motor Starter
ZVM-600
• Low Profile
• 10 Amp, DPDT
• Millivolt Sensitivity
• 600 Volt Max.
Signal Overvoltage
Operation
An AC input voltage of 115VAC must be
provided to the ZVM continuously. While the
ZVM will drop-out and pick-up based on an
adjustable millivolt set point, the signal circuit
will accept up to 600VAC. With no voltage
on the signal terminals, the internal relay is
energized, transferring the output contacts.
When the voltage exceeds the set point, the
relay will de-energize. When used on Zero
Speed applications, a loss of input voltage
will cause the relay to remain
de-energized as if the motor were still running. Reverse operation is available. For DC
current sensing, select a 100mVolt shunt of
the correct current rating and connect the
shunt in series with the load and in parallel
with the ZVM’s signal terminals.
•
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