Monarch Instrument ACT-1B Operating Manual

Printed in the U.S.A.

Copyright 2009 Monarch Instrument, all rights reserved

1071-4843-111R

0909

MONARCH INSTRUMENT

Instruction Manual

ACT-1B Series

Panel Tachometer

15 Columbia Drive

Amherst, NH 03031 USA

Phone: [phone]

Fax: [phone]

E-mail: [e-mail]

Website: www.monarchinstrument.com

Safeguards and Precautions

1. Read and follow all instructions in this manual carefully, and
retain this manual for future reference.

2. Do not use this instrument in any manner inconsistent with
these operating instructions or under any conditions that
exceed the environmental specifications stated.

3. Be sure the power supplied to this instrument matches the
specification indicated on the rear panel of the instrument.

4. Be sure all power is removed before making or removing any
connections to or from this instrument.

5. This instrument is not user serviceable. For technical
assistance, contact the sales organization from which you

purchased the product or Monarch Instrument directly.

DECLARATION OF CONFORMITY

As Manufacturer:

Monarch Instrument

Division of Monarch International Inc.

15 Columbia Drive, Amherst NH 03031 USA

declares under Monarch’s sole responsibility that the product:

Name: ACT - Panel Tachometer
Models: ACT-1B

to which this declaration relates is in conformity with the following standards:

In order to comply with EU Directive 2002/96/EC on Waste
Electrical and Electronic Equipment (WEEE): This product

may contain material which could be hazardous to human health
and the environment. DO NOT DISPOSE of this product as un­sorted municipal waste. This product needs to be RECYCLED in

accordance with local regulations, contact your local authorities
for more information. This product may be returnable to your distributor for
recycling - contact the distributor for details.

Monarch Instrument’s Limited Warranty applies. See
www.monarchinstrument.com for details.

Warranty Registration and Extended Warranty coverage available
online at www.monarchinstrument.com.

EMC: EN50082-1:1997

and therefore conforms with the requirements of Council Directive 89/336/EEC
relating to electromagnetic compatibility. (File R-351 4N2).

8th October 1999

Manufacturer (Amherst,NH) Alan Woolfson, VP Engineering (Authorized Signature)

EN50082-2:1995
EN55011:1991 Group 1 Class B

@CH_A/LOEND = 12 (or 1_SEC, HALF) Sets low end time. This allows a

min reading of 5 RPM, 60 RPM, or 120

RPM.
@CH_A/GATE Shows Gate Speed. (Default is 12)
@CH_A/GATE = STD (1/100 Second) or FAST (1/1000 second). Sets

Gate Speed (Default is 1/100)

@DECPT Shows the number of decimal places

displayed
@DECPT = NONE, 1, 2, or 3 Sets the maximum number of decimal

places

@DAC1/ FSCAL Shows Analog Out Full Scale
@DAC1/FSCAL = xxx.xx Sets the Reading value that the Analog

output will output Full Scale (5V or

20mA). Depends on TYPE.
@DAC1/0SCAL Shows Analog Out Zero Scale
@DAC1/0SCAL = xxx.xx Sets the Reading value that the Analog

output will output Zero Scale (0V or

4mA). Depends on TYPE. (Default is

0.00)

@OUTPT Shows pulse output polarity
@OUTPT = POS or NEG Sets pulse output polarity

@DISPR Shows Display Update Rate
@DISPR = HALF or 1_SEC or 1.5_S. This sets the maximum display

update rate to one half a second, 1 second

or 1 ½ seconds between updates.

TABLE OF CONTENTS

TABLE OF CONTENTS

OVERVIEW ..................................................................................... 1

INSTALLATION and POWER .......................................................... 1

Installation ............................................................................... 2

Power ...................................................................................... 2

USB Programming Cable and Software ................................ 3

SENSOR CONNECTIONS ............................................................. 3

OUTPUT OPTIONS ......................................................................... 4

Current Output Option (IO) ...................................................... 5

Analog Output Option (AO) ...................................................... 6

Pulse Repeater Option (PO) ................................................... 6

SPECIFICATIONS ........................................................................... 7

OPTIONS ........................................................................................ 8

ACCESSORIES / SENSORS .......................................................... 9

APPENDIX A - Serial Programming Commands ......................... 10

@SERNO Shows unit Serial Number

11

OVERVIEW

The ACT-1B is an economical and easy to use digital tachometer that displays
rotational speed directly in RPM or RPS on a 5-digit red 0.56” high LED display
using a speed sensor providing a single (or multiple) pulse(s) per revolution. The
number of pulses per rev is factory set at time of ordering and can be user programmed
from 1 to 999 using the optional USB Programming Cable and PM Remote Software.
Power may be either universal 100 to 240 Vac (50/60Hz), or optionally, 12 Vdc or 24
Vdc isolated. The ACT-1B accepts input signals from optical, proximity, magnetic,
infrared or laser sensors, or direct TTL or external ac inputs. The ACT-1B is suitable
for panel mounting or bench top use with convenient screw terminal connections on
the rear panel of the instrument.

If specified at time of order placement, the ACT-1B may be equipped with
either an optional 4 to 20 mA current output (IO) or 0 to 5 Vdc analog output
(AO) proportional to speed, and/or a TTL pulse repeater output (PO).

INSTALLATION and POWER

The ACT-1B enclosure is a standard 1/8 DIN size requiring a 3.58” wide by

1.74” high (91x44 mm) mounting hole.

ACT Front View ACT Side View

Figure 1 Dimensions in Inches (mm)

1

Appendix A - Serial Programming Commands

Programming the unit requires the optional USB Programming Cable with
associated PM Remote software and a PC running Windows XP or later
with an available USB port.

All serial commands are @ then two or more characters or words separated
by a delimiter “/”. One or two numbers follow some commands. All valid
commands respond immediately with an “OK” or data, or “ERR” if incorrect.
Default baud rate is 9600.

Communication requires the USB Programming Cable.

@PI Product Information, Shows Product name \n Firmware revision \n
@C2 Shows all settings
@D0 Sends current display value once
@D1 Sends display data continuously (at up to display update rate)
@D2 Stops sending data
@M X Sends Max reading
@M N Sends Min reading
@RE 32 Resets Max
@RE 64 Resets Min
@RE 96 Resets Max and Min

@CH_A/TYPE Shows current type
@CH_A/TYPE = RPM Sets scale to 60 so displays in RPM.
@CH_A/TYPE = FREQ Sets scale to 1 so displays in hertz.
@CH_A/TYPE = SCALE Scale mode. Enter Scale factor.
@CH_A/TYPE/SCALE = 30.00 This will set the SCALE factor to 30.00

@CH_A/INPUT Shows sense of the trigger input
@CH_A/INPUT = POS (or NEG) Sets the sense of the input trigger
@CH_A/LOEND Sets how long (in secs) with no pulses

before the tachometer shows 0.

10

ACCESSORIES / SENSORS

T- 5 Reflective Tape - 5 foot (1.5 m) roll, 0.5 inch (10 mm) wide

USB Programming Cable with PM Remote Software on CD:

Enables the user to program the ACT-1B using a PC with
USB connection. The software also allows remote monitoring
of the RPM using a graphic display or an Excel

ROLS-W Remote Optical Laser Sensor with 8 foot cable

ROS-W Remote Optical Sensor with 8 foot cable

ROS-P-25 Remote Optical Sensor with 25 foot cable (must cut plug off)

ROS-HT-W-25 Remote Optical Sensor for high temperature applications

to 257 °F (125 °C) with 25 foot cable

P5-11 Proximity Sensor

M-190W Magnetic Sensor with 8 foot cable

MT-190W Magnetic Trigger Sensor with Amplifier Module, 8 foot cable

GE-200 Gasoline Engine Electromagnetic Inductive Sensor and

amplifier with 23 feet of cable

IRS-W Infrared Sensor with 8 foot cable

TM

spreadsheet.

Installation

Remove the mounting clips, if fitted, and install the unit into the panel from
the front. From the rear of the unit, install the mounting clips on each side
and tighten the mounting screws against the rear of the panel.

WARNING: Do not over tighten the mounting screws.

Power

Power to the unit is connected to the terminals under the section labeled
POWER on the rear panel. Be sure the power supplied matches the
specification indicated on the rear panel. Refer to Figure 2 below.

USB
Programming
Jack

Figure 2 ACT-1B Rear Panel

If the unit is ac powered (100 - 240 Vac), connect the Live (Hot) wire to
the terminal marked L+ and the Neutral (Return) wire to the terminal
marked N-.

If the unit is dc powered, connect the dc supply Positive to the terminal
marked L+ and the dc supply Negative or Common to the terminal
marked N-.

9

2

USB Programming Cable and Software

The 3.5 mm connection “hole” in the center bottom of the rear panel is for the
optional USB Programming Cable (p/n 6180-031), which comes with Windows ™
compatible PM (Panel Meter) Remote Software on CD. The cable and software
combination allows the user to configure: operation mode, analog output scaling,
decimal places, display update rate and pulses per input. The user can also view real
time data in digital format and/or through Microsoft

®

Excel. Software instructions are

included on the software CD.

This product is designed to be safe for indoor use under the following conditions
(per IEC61010-1):

Installation Category II per IEC 664
Pollution Degree Level II per IEC 664
Operating Temperature 32-122 °F [0-50 °C]
Humidity Maximum relative humidity 80% for temperature up to 88 °F

[31 °C] decreasing linearly to 50% relative humidity at
104 °F [40 °C]

SENSOR CONNECTIONS

A speed sensor (not included) is connected to the terminals under the section
labeled INPUT on the rear panel. Refer to Figures 2 and 3.

Connections and their functions are as follows:

+VA Positive +12 Vdc to provide power to optical, laser, infrared

or amplified magnetic sensors. Maximum load is 75 mA dc.
Optionally 5 or 24 Vdc supply may be ordered.

PX+ Positive +12 Vdc supply for use with two-wire proximity

sensors. Maximum load for proper operation with two-wire
sensors is 25 mA.

SIG Positive input signal from the speed sensor. Accepts TTL

pulses or ac signals, unipolar and bipolar, from 1.5 Vac to 50
Vac. (Contact the factory for increased sensitivity.) Connect
the signal wire from three-wire sensors or the positive side of
two-wire magnetic sensors to this terminal. Typical input
impedance is 10 Kohms.

COM Common or Negative connection for both signal and power

from most sensors.

Refer to Figure 3 for connection of Monarch standard sensors. The
connections are typical for these types of sensors.

3

OPTIONS

IO: 4 to 20 mA current output

AO: 0 to 5 Vdc analog output

NOTE: Full scale RPM must be specified for the above

options when ordering unless the USB
Programming Cable and PM Remote Software is
ordered as a separate item.

PO: 0 to 5 V TTL compatible pulse output

NOTE: Pulses out per revolution equal pulses in per

revolution.

CAL-N.I.S.T. N.I.S.T. Traceable Certificate of Calibration

8

SPECIFICATIONS

Range: 5 to 99,999 RPM
Accuracy:
Resolution: 1 RPM (user programmable to 0.0001*)
Display: 5 digit, 0.56” (14 mm) high red LED
Display Update: Twice per second above 120 RPM (user programmable

Dimensions: 1/8 DIN by 4.5” (114 mm) deep
Power Supply: Standard: 100 - 240 Vac ±10%, 50/60 Hz, 5VA

Inputs: Universal input for optical, proximity, two-wire or three-

Sensor Excitation: 12 Vdc at 20 mA for proximity sensors, 12 Vdc at 75 mA

Recommended Sensors: Optical - Monarch ROS-W

IO Option: 4 to 20 mA out, 16 bit resolution 12Vdc compliance voltage. See

AO Option: 0 to 5 Vdc out, 5 mA 16 bit resolution. Full scale RPM settings

PO Option: 0 to 5 V TTL pulse, non-inverting, one pulse out for each

* Requires optional USB Programming Cable and PM Remote Software

±1 RPM or 0.005% of reading

to 0.5, 1, or 1.5 second*)

Optional: 12 or 24 Vdc ±10%, Isolated, 5 Watts

wire magnetic, infrared or laser sensors
TTL input or 2 Vac to 50 Vac peak to peak input
Standard input is 1 pulse per revolution. (user
programmable from 1 to 999*)

for all other sensors, Optional 5 or 24 Vdc available

Proximity - Monarch P5-11
Magnetic - Monarch M-190W or MT-190W
Infrared - Monarch IRS-W
Laser - Monarch ROLS-W

page 7 for maximum load calculation. Full scale RPM settings as
specified when ordered. (user programmable*)

as specified when ordered. (user programmable*)

pulse in. (Positive or negative out programmable*)

PX++VA COMSIG

WHITE

M-190W

MAGNETIC

SENSOR

INPUT

BLACK

Shield to

COM

BROWN

Link SIG to
COM

PROXIMITY

SENSOR

INPUT

PX++VA SIG COM

P5-11

INPUT

PX++VA SIG COM

BROWN

BLUE

BLACK

ROS-W - OPTICAL SENSOR (SHOWN)

R0LS-W - REMOTE LASER SENSOR

IRS-W - INFRARED SENSOR

MT-190W - AMPLIFIED MAGNETIC SENSOR

BLUE

Shield to

COM

INPUT

SIG

+VA PX+ COM

AC or TTL

SOURCE

Figure 3 Sensor Connections

OUTPUT OPTIONS

The ACT-1B may be equipped with either a Current Output (IO) or an
Analog Output (AO), and/or a TTL Pulse Output (PO).

NOTE: Full scale RPM settings must have been specified when ordered

or may be user programmed using the optional USB Programming
Cable and PM Remote Software.

The Current or Analog Outputs are connected to the terminals in the section
labeled ANALOG OUTPUT OPTION on the rear panel. The actual output
is marked. The Pulse Output is connected to the terminals under the
section labeled OUT on the rear panel.

CAUTION: The IO or AO COM may NOT be isolated from the other

COM connections.

7

4

Current Output Option (IO)

The current output is 4 to 20 mA. This output is a current source and
has a 12 Vdc internal compliance voltage. (Optional 24 Vdc may be
ordered).

Typical connections are as follows: (See Figure 4.)

Connect the Positive side of the load to the terminal marked OUT
and the other (Negative) side of the load to the terminal marked

COM.

Do not use an external voltage supply.

Figure 4 Current Output Option Connections

Analog Output Option (AO)

The analog output is 0 to 5 Vdc.

Connect the Positive side of the signal to the terminal marked OUT,
and the Return side of the signal to the terminal marked COM.

NOTE: If your ACT-1B is equipped with either a current output or

an analog output, the full-scale output has been factory preset
to the speed range specified at the time of purchase. The
output range may be programmed using the optional USB
Programming Cable and PM Remote Software.

Pulse Repeater Output Option (PO)

The Pulse Repeater output provides a conditioned TTL positive going
5 V pulse out for each pulse in.

Connect the Positive signal wire (+5 V pulse) to terminal marked +P
and the Return to the terminal marked COM in the rear panel section
labeled OUT.

NOTE: The polarity of the optional pulse output can be set by the

user using the optional USB Programming Cable and PM
Remote Software.

NOTE: With the internal 12 Vdc compliance voltage the maximum

load for the current loop is 500 Ohms.

If the optional 24 Vdc compliance option is ordered the
maximum load will be 1000 Ohms.

5

6