Bettis VSM02 Quick Start Guide

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

March 2020

Bettis M2CP Variable Speed Module (VSM02)

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

Table of Contents

Section 1: Preface

Section 2: Timer Settings

Section 3: Components

Section 4: Operating Modes and Jumpers

4.1 Features ........................................................................................................ 4

4.2 Water Hammer ............................................................................................. 4

4.3 Open Timer ................................................................................................... 4

Section 5: Software Version Number Display

Table of Contents

March 2020

ITable of Contents

Section 1: Preface

March 2020

Section 1: Preface

The VSM02 module is a precision timer that uses microprocessor technology to control
the speed of valve travel in selected applications. As such, it provides the ability to
control valve speed while opening and closing or selectively in only one direction.
Valve operation can be setup to start at one speed and change to a slower speed as
required. External equipment operation can be interlocked with the VSM02 so that valve

operation is based on specic process conditions.

VSM02 mounts with 2 slotted screws in the ISM location or on the back of an ISM module
with hex standoffs. The module switches a SSR (solid state relay) selectively to apply power
to the actuator motor. This extends the life of the electro-mechanical reversing contactor.
It also prevents valve plugging during instant direction reversal of the actuator.

The VSM02 has 6 timers, allowing selection of 3 different motor speeds during valve
operation. Motor speed can be congured to vary two times in one direction.
The module can only be used to slow down the speed of the actuator. Settings on the
module pulses the SSR with an ON or OFF duty cycle according to adjustments.
Adjustments include BCD dial type switches and a x10 multiplier (DIP switch setting) for
setting each timer function.

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

The OPEN control determines the speed of the opening valve stroke. This is disabled by
setting OPEN “ON” dial to zero.

The CLOSE control determines the speed of the closing valve stroke. This is disabled by
setting CLOSE “ON” dial to zero.

Water hammer is normally used with the intermediate limit switch LSA to change speeds.
When the contacts are closed by valve travel, the timer is activated.
It overrides all other speed controls while activated.

1

Preface

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

Section 2: Timer Settings

Each dial sets timer in one second increments from 0 to 9. Setting the x10 DIP switch
associated with each timer will multiply the time by 10. Thus, when the DIP switch of a
timer is ON, the time is set in increments of 10 seconds for each graduation the dial from
0 to 90 seconds, i.e. 10, 20, 30, 40, etc.

Section 2: Timer Settings

March 2020

Timer Settings

2

Section 3: Components

March 2020

Section 3: Components

Figure 1 Typical Board

BCD Dial Switch

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

LED

x10 DIP Switch

Figure 2 Wiring Diagram

Stop

WATER

HAMMER

VSM-02

Close

CLOSE OPEN

Open

Water Hammer

Intermediate

Contacts

Selector

3

Components

Quick Start Guide

QSG-02-04-55-0016-EN Rev. 0

Section 4: Operating Modes and Jumpers

March 2020

Section 4: Operating Modes and Jumpers

4.1 Features

• Open Speed Control

• Close Speed Control

• Water Hammer Control

• Run LED displays S/W version number and then ashes 0.5 second ON and

0.5 second OFF for visual indication of time in seconds

Table 1.

Adjustment Range x10 DIP Switch

0 - 9 seconds OFF
0 - 90 seconds ON

NOTE:

Minimum ON or OFF time is 1 second setting. Timers always start with a 1 second OFF time
to prevent valve plugging on instant reversal. Zero ON time setting disables the timer.

4.2 Water Hammer

Set LSA to start timer position or use external switch.

OPERATING MODE ADD JUMPER BETWEEN TBM TERMINALS

Close direction only 41 and 9

Open direction only 41 and 10

Both close and open 41 and S

External control only 42 and external switched 115 V AC

LSA and external control 42 and external switched 115 V AC to 41

Disabled Disconnect all jumpers from terminals 41 and 42

4.3 Open Timer

Set LSA or LSB to start or disable water hammer timer position

If water hammer is not used in the closing direction, either LSA or LSB may be used to
change opening speed by enabling or disabling water hammer. Connect jumper wire
between 10 and the selected LSA or LSB switch terminal. When the switch activating
water hammer is closed, the water hammer timer will override opening timer. If water
hammer timer “off time” is set to zero, then the actuator will travel at full speed when the
switch is closed.

Operating Modes and Jumpers

4

Section 5: Software Version Number Display

March 2020

QSG-02-04-55-0016-EN Rev. 0

Quick Start Guide

Section 5: Software Version Number Display

Each time the module is powered on by OPEN or CLOSE command, the run LED displays

software version number rst and then ashes 0.5 second ON and 0.5 second OFF for visual
indication of time in seconds. Version number is displayed by 0.7 second ashes in the

following sequence.

At power up the LED is ON for 4 seconds and ashes the number of times equal to the rst
(most signicant) digit. After which it is ON for 2 seconds and then ashes the number of
times equal to the second (least signicant) digit.

Example: version 1.1 will be ON for 4 seconds, ash one time and then ON for 2 seconds
and then ash one time. After a short off time delay the normal 0.5 second ON and

0.5 second OFF sequence will begin.

5

Software Version Number Display

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