Conveyor Components Company RMS-8S User manual

I0050001revG.DOC ©Copyright Conveyor Components, Co. 2012 Page 1 of 6
CONVEYOR COMPONENTS COMPANY
130 Seltzer Road, PO Box 167 Croswell, MI 48422 USA
PHONE: [phone] TOLL FREE [phone] FAX: [phone]
Email: [email protected] http://www.conveyorcomponents.com
MODEL RMS INSTALLATION INSTRUCTIONS
Figure 1: Introduction
CONTENTS Page
A. Introduction
1. Usage 2
2. How it operates 2
B. Specifications
1. Sensor 2
2. Control 3
C. Installation
1. Location and mounting 3
2. Wiring 4
3. Signal set point 4
4. Time delay setting 5
D. Trouble shooting
1. Problems and solutions 6
2. Factory assistance 7
E. Warranty and parts
1. Warranty 7
2. Electronics replacement 7
®
RAINTIGHT ENCLOSURE
MOTION CONTROL
130 SELTZER ROAD
CROSWELL, MI 48422
RELAY:
DPDT 5 AMP RESISTIVE, 120 VAC
DPDT 5 AMP RESISTIVE, 240 VAC
DPDT 5 AMP RESISTIVE, 30 VDC
1/10 HP, 120 VAC; 1/10 HP, 240 VAC
CONVEYOR COMPONENTS, CO.
MODEL RMS- G DATE
RMS-1G; RMS-2G; RMS-3G RMS-1; RMS-2; RMS-3
NO2
L1 NC1 L2 C1 NO1 NC2 C2 PN
(VOLTAGE)

I0050001revG.DOC ©Copyright Conveyor Components, Co. 2012 Page 2 of 6
A. INTRODUCTION
1. Usage
The model RMS-G is a compact motion sensing control with a NEMA Type 4X enclosure. It will
produce an output relay closure at a predetermined speed which may be either over speed, under
speed, or zero speed. A compact enclosure combined with solid state electronics, makes this one of
the most advanced motion detectors available. The model RMS-G protects all valuable rotating
equipment including belt conveyors, bucket elevators, rotary feeders, or screw conveyors. It uses a
remote mounted inductive sensor to monitor rotation speed in harsh environments.
2. How it operates
The model RMS-G senses motion by means of pulses received from a remote inductive sensor. The
sensor generates measurable pulses by a metal target, which rotates past it. These pulses are
converted to a digital electronic signal. Solid state circuitry then analyzes the digital signal and
activates or de-activates the output relay at the pre-set speed.
Field adjustment of the signal set point is easily accomplished by means of an adjustment screw on
the electronics. For under speed sensing, the signal point is set below the normal operating speed of
the unit. The output relay will then de-energize if the speed drops below the signal point. For over
speed sensing, the pick-up point is set above the normal operating speed. The output relay will
energize if the speed exceeds the pick up point. Zero speed sensing can be accomplished by turning
the adjustment screw to its minimum setting. The output relay will then de-energize when the shaft
speed of the unit approaches zero.
B. SPECIFICATIONS
Table 1: Motion Sensor Specifications
Part number
RMS-8S
RMS-12S
RMS-18S
RMS-30S
Sensor type
2 wire DC
2 wire DC
2 wire DC
2 wire DC
Body diameter
8mm (0.31 in)
12mm (0.47 in)
18mm (0.71 in)
30mm (1.18 in)
Body length
50mm (1.96 in)
71mm (2.80 in)
80mm (3.15 in)
81mm (3.19 in)
Thread size
M8
M12
M18
M30
Cable length
2m (6.6 ft)
2m (6.6 ft)
2m (6.6 ft)
2m (6.6 ft)
Sensing range
1.0mm (0.04)
2.0mm (0.08)
5.0mm (0.20)
10mm (0.30)
Maximum pulse rate
2 KHz
1.5 KHz
1.0 KHz
0.6 KHz
Maximum voltage
30 VDC
30 VDC
30 VDC
30 VDC
Maximum current
100 MA
100 MA
100 MA
100 MA

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Table 2: RMS-G Control Unit Specifications
Model
Input
Features
RMS-1G
105-135 VAC, 50/60 Hz
Electronics and NEMA Type 4X Enclosure
RMS-2G
210-250 VAC, 50/60 Hz
Electronics and NEMA Type 4X Enclosure
RMS-3G
24 AC/DC
Electronics and NEMA Type 4X Enclosure
Output
DPDT relay to 5 Amp. Resistive at 120 volts A.C.
DPDT relay to 5 Amp. Resistive at 240 volts A.C.
DPDT relay to 5 Amp. Resistive at 30 volts D.C.
1/10 Horse Power at 120 volts A.C.
1/10 Horse Power at 240 volts A.C.
Operating Temperature Range
-50 deg. F to +150 deg. F
Repeatability
+2% maximum at constant voltage and temperature
Power consumption
3 Watts
Pick up point
3 Input Ranges at which relay will energize
LOW
2 to 120 PPM
MEDIUM
20 to 1200 PPM
HIGH
200 to 12000 PPM
Signal point
Speed at which relay will de-energize. Recommended to be 15-
20% lower than pick up point. This will eliminate nuisance
shutdowns.
Start up delay
Adjustable up to 45 seconds
Enclosure
Plastic (Halogen-free Polycarbonate)
Weight
1 lb.
Size: RMS-1G, RMS-2G, RMS-3G
2.95” high x 4.92” wide x 4.92” long [75 x 125 x 125 mm]
C. INSTALLATION
1. Location and mounting (See Figure 3 for examples.)
The model RMS-G is equipped with a NEMA Type 4X enclosure, and can be mounted using screws
through the corner holes of the enclosure.
For normal sensor installations, use 1/4" diameter machine bolts with lock washers through the two
mounting holes in the base of the mounting bracket. (Mounting bolts and lock washers are not
furnished with the switch.) The sensor should be mounted at a right angle to the object to be sensed
at a distance as indicated in Table 1.
2. Wiring
Wire input power from source to terminals L1 and L2. The output of the model RMS-G is a DP/DT
relay. There are two sets of output contacts. Each set includes normally open, normally closed, and
common. As a result, the unit can be used to control two separate circuits such as a motor starter and
a signal light.

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Figure 2: Wiring Layout Models RMS-1G, RMS-2G, RMS-3G. These models are supplied with a time
delay / set point adjusting tool.
20980009/B0980003revB
SPEED
RANGE LOW
HIGH
MEDIUM
SET POINT:
CLOCKWISE
INCREASES
RELAY
INDICATOR
L1 L2 C1 NC1 NO1 NO2 NC2 C2 N P
SENSOR: WHITE
SENSOR: BLACK
COMMON 2
NORMALLY CLOSED 2
NORMALLY OPEN 2
NORMALLY OPEN 1
NORMALLY CLOSED 1
COMMON 1
POWER
POWER
TIME DELAY:
CLOCKWISE
INCREASES
PULSE IN
INDICATOR
3. Signal set point
FOR USE AS AN UNDER SPEED SWITCH:
1. Select the speed range required by changing the switch to LOW for 2 to 120 PPM (pulses per
minute), MEDIUM for 20 to 1200 PPM, and HIGH for 200 to 12000 PPM.
2. Turn the set point potentiometer to the counterclockwise stop. With signal present from the
sensor and at normal operating speed, the yellow pulse indicator L.E.D. should blink. The green
relay indicator L.E.D. should turn on indicating that the output relay is energized.
3. Slowly turn the set point adjustment screw clockwise until the output relay de-energizes (a "click"
will occur at this point). The green L.E.D. will turn off.
4. Back up until the output relay energizes. Thus, when speed drops below the set point, the green
L.E.D. should turn off indicating that the output relay is de-energized.
5. If the normal operating speed exceeds 120 PPM for the LOW or 1200 PPM for the MEDIUM or
12000 PPM for the HIGH, the unit should be adjusted as follows. Turn the set point adjustment
screw clockwise until it reaches the stop. When the speed drops below 120 PPM for the LOW or
1200 PPM for the MEDIUM or 12000 PPM for the HIGH, the relay will energize.

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6. Note: Typically, the motor contactor is wired in series with one of the N.O. output contacts; and an
alarm is wired with one of the N.C. output contacts.
FOR USE AS AN OVER SPEED SWITCH:
1. Select the speed range required by changing the switch to LOW for 2 to 120 PPM, MEDIUM for
20 to 1200 PPM, and HIGH for 200 to 12000 PPM.
2. Turn the set point potentiometer to the counterclockwise stop. With motion present on the input
shaft and at normal operating rpm, the yellow pulse indicator L.E.D. should blink. The green relay
indicator L.E.D. should turn on indicating that the output relay is energized.
3. Slowly turn the set point adjustment screw clockwise until the output relay de-energizes and the
green L.E.D. turns off. (A "click" will occur at this point). With the potentiometer on that setting, if
the speed increases the output relay will energize.
4. Note: Typically, the motor contactor is wired in series with one of the N.O. output contacts; and an
alarm is wired with one of the N.C. output contacts.
FOR USE AS A ZERO SPEED SWITCH:
1. Select the HIGHEST speed range by changing the switch to HIGH for 20 to 12000 PPM.
2. Turn the set point potentiometer slightly under the current running speed, as indicated by the
green LED turning on, and then adjust the potentiometer slightly under this setting. If the speed
drops below this set point, the output relay will de-energize.
3. Typically, the motor contact is wired in series with one of the N.O. output contacts, and an alarm is
wired with one of the N.C. output contacts. NOTE: very slow speeds will cause a mechanical
delay in the sensor operation, resulting in a longer time lapse before response.
4. Time delay setting
The model RMS-G motion sensing control has a start up delay that is adjustable up to 45 seconds.
This setting should be set, depending on the application and the length of time it takes for the
conveyor to reach its normal operating speed. This time delay takes effect upon power-up of the
model RMS-G after shutdown. AC power to the model RMS-G must be interrupted for timer to be
reset. This delay only affects start up, avoiding nuisance start up alarms.
Figure 3: Sensor Mounting Examples.

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D. TROUBLE SHOOTING
1. Problems and Solutions
Table 3
Problem:
Solution:
No pulses from yellow pulse indicator
LED.
Check power supply and voltage.
Make sure there is a signal from the sensor.
Check to see if the LED in the sensor is blinking.
Relay is not energized or de-energized
when expected. (i.e. green relay
indicator LED not on or off when
expected)
Check power supply and voltage.
Make sure there is a signal from the sensor.
Check for proper set point.
Check for proper speed setting. (Low, Medium, or High)
Alarm sounds when equipment is
started.
Start-up delay setting may be too short: increase if needed.
Check for proper connections between alarm and relay.
AC power to the RMS-G must be interrupted for alarm to reset.
Alarm does not sound when expected.
Check power supply.
Check for proper connections between alarm and relay.
Equipment is not shut off when
expected.
Check power supply.
Check for proper connections between control circuit and relay.
Green LED changes state yet relay contacts
do not transfer.
Relay contacts damaged or closed: replace electronics board.
Relay takes a long time to change state at
very low speeds, especially when used as a
zero speed switch.
NOTE: Very slow speed mechanically delays sensor operation,
resulting in a longer response to changes.
Use a higher speed range if possible.
Increase target disc rotational speed with belt or chain drive.
Use a multiplier sprocket to increase target disc RPM.
Use highest range that includes alarm speed needed.
Adjust time delay potentiometer slightly clockwise. Do not set the
time delay pot completely CCW.
Consult factory.
2. Factory assistance
If assistance is needed to locate difficulties with a unit, or you would like information about alternate
control devices, please call the factory at 1-800-233-3233.
To help solve a problem quickly, please have as much of the following information as possible when
you make your call:
*Model number *Date purchased
*Brief application information *Brief description of the problem
EQUIPMENT SHIPPED BACK TO THE FACTORY WITHOUT PROPER AUTHORIZATION WILL BE
REFUSED AND RETURNED AT THE SHIPPER'S EXPENSE.
E. WARRANTY AND PARTS
1. Warranty
Refer to Manufacture's General Terms and Conditions of Sale for warranty information.
2. Electronics Replacement
Please contact our sales department for replacement parts and availability.