THORLABS SHB1 User manual

Original instructions in accordance with EC-Machinery Directive 2006/42/EC

SHB1 and SHB1T

1" High Speed Shutters

and Controller

User Guide

Ø1" Shutters and Controller

Original instructions in accordance with EC-Machinery Directive 2006/42/EC

Table of Contents

Chapter 1Warning Symbol Definitions ........................................... 1

Chapter 2Safety ................................................................................. 2

Chapter 3Description ........................................................................ 3

3.1.Overview...............................................................................4

Chapter 4Setup and Operation ........................................................ 6

4.1.ConnectionGuide...................................................................6

4.2.ManualShutterOperation.....................................................6

4.3.ExternalModulationModes...................................................7

4.3.1.Protected Mode ........................................................................... 8

4.3.2.Unprotected Mode ....................................................................... 8

4.4.DefaulttoOn.........................................................................9

4.5.InterlockOutput.....................................................................9

4.6.Indicators.............................................................................10

4.6.1.Power LED................................................................................. 10

4.6.2.Status LED................................................................................. 10

4.7.TimingPerformance.............................................................11

4.8.TypicalPerformance............................................................12

4.9.SHB1TCoatingPerformance.................................................12

Chapter 5Specifications ................................................................. 13

Chapter 6Interface Connector ....................................................... 14

Chapter 7Cleaning and Maintenance ............................................ 15

Chapter 8Troubleshooting ............................................................. 16

Chapter 9Mechanical Drawing ....................................................... 17

Chapter 10Declaration of Conformity ............................................. 18

Chapter 11Regulatory ....................................................................... 19

Chapter 12Thorlabs Worldwide Contacts....................................... 20

Ø1" Shutters and Controller Chapter 1: Warning Symbol Definitions

Rev K, December 4, 2019 Page 1

Chapter 1 Warning Symbol Definitions

Below is a list of warning symbols you may encounter in this manual or on your

device.

Symbol Description

Direct Current

Alternating Current

Both Direct and Alternating Current

Earth Ground Terminal

Protective Conductor Terminal

Frame or Chassis Terminal

Equipotentiality

On (Supply)

Off (Supply)

In Position of a Bi-Stable Push Control

Out Position of a Bi-Stable Push Control

Caution: Risk of Electric Shock

Caution: Hot Surface

Caution: Risk of Danger

Warning: Laser Radiation

Caution: Spinning Blades May Cause Harm

Ø1" Shutters and Controller Chapter 2: Safety

Page 2 21690-D02

Chapter 2 Safety

All statements regarding safety of operation and technical data in this instruction

manual will only apply when the unit is operated correctly.

The unit is supplied with line cord with a North American or European plug. Make

sure your line cord fits your local outlets.

The unit is equipped with an external switching power supply for voltages from

100 to 240 VAC. There is no need to change the fuse when selecting your

regional mains voltage. There are no user serviceable parts in this product.

CAUTION

DO NOT OPEN HOUSING! The SHB1 and SHB1T shutters and controller have no

user-serviceable parts. Do not operate without cover installed.

WARNING

Do not operate in wet or damp conditions.

WARNING

Mobile telephones, cellular phones, or other radio transmitters should not be

used within the range of three meters of this unit since the electromagnetic field

intensity may exceed the maximum allowed disturbance values according to

EN50082-1.

WARNING

Space the front side of the shutter head at least 1/8" from ferrous materials.

Keep shutter head away from strong magnetic fields. Both may interfere with

shutter operation.

WARNING

In the event of a power failure the shutter will not close.

Ø1" Shutters and Controller Chapter 3: Description

Rev K, December 4, 2019 Page 3

Chapter 3 Description

The SHB1 and SHB1T are one-inch-aperture, high-speed, bladed shutters, driven by

the included shutter controller. The shutter connects to the controller through a

shielded four-conductor cable using a four-pin, mini-DIN connector. The included

controller provides the drive levels required for optimal performance and monitors the

state of the shutter. The controller has a BNC connector for external modulation, and

an interlock output jack for safety. A switching power supply is included.

The SHB1(T) can be controlled directly from the buttons on the controller or via an

external modulation source. There are two buttons on top of the controller unit, one to

turn the power on and off and the other, labeled as ENABLE, to open or close the

shutter. When the unit is first powered on, it is in the mode it was last, either Manual

or External Modulation Mode expecting input from the external modulation port.

Manually depressing the ENABLE button will open and close the shutter. To use the

modulation input, press and hold the ENABLE button for 3 seconds.

The external modulation port can drive the shutter up to a maximum frequency of 15

Hz. In normal operation, when the logic of the external modulation pulse is high, the

shutter will open. When it is low, the shutter will be closed. In normal operation, the

shutter will shut down if it is run at its max frequency for too long to prevent

overheating. In Unprotected Mode, this safety feature is disabled and the unit may be

damaged if run too long without thermal control.

The SHB1(T) has many safety features. The controller detects the state of the shutter

using an internal optical sensor inside the shutter package. The optical sensor detects

the shutter blade's position, confirming if the shutter is open or closed. This feature,

when used with the interlock connector, makes this shutter ideal for applications

where a laser safety lockout is required. In the event of a failure such as a blade jam,

the SHB1(T) will shut down. This changes the state of the interlock and LED light will

turn red. The SHB1(T) can detect when the blades are not operating at the set

frequency and will shut down to prevent damage to the SHB1(T).

The SHB1(T) come with the shutter head, controller, external switching supply, AC

cord, and this manual.

Ø1" Shutters and Controller Chapter 3: Description

Page 4 21690-D02

3.1. Overview

Figure 1 Controller Front View

Figure 2 Controller Rear View

Enable Button

Status LED

Power LED

Power Button

Interlock Jack

External

Modulation Input

Shutter Head

Jack

DC Input Jack

Ø1" Shutters and Controller Chapter 3: Description

Rev K, December 4, 2019 Page 5

Figure 3 Shutter Head Front and Rear Views

Ø1.0" 5-Bladed

Aperture

Ø0.10" Mounting

Through Holes, 3 Places

SHB1 Shutter Head, Front

SHB1T Shutter Head, Front

SM1 Thread

(1.035"-40)

SHB1T Shutter Head, Rear

SHB1 Shutter Head, Rear

Ø1.0" 5-Bladed

Aperture

Ø0.10" Mounting

Through Holes, 3 Places

SM1 Thread

(1.035"-40)

Ø1" Shutters and Controller Chapter 4: Setup and Operation

Page 6 21690-D02

Chapter 4 Setup and Operation

4.1. Connection Guide

1. Remove components from the package.

2. Secure the SHB1(T) shutter head to your setup using the three

mounting holes, the SM1 thread, or a mounting adapter (sold

separately).

3. Connect the AC power cord to the power supply and then connect to the

AC power outlet. The SHB1 and SHB1T are each supplied with an

external AC-DC switching power supply rated at 100 – 240 VAC, 47 –

63 Hz, and 5 VDC @ 2.4 A maximum output.

4. Place the controller on a flat surface. Connect the mini-DIN connector

from the shutter head, with the arrow on the connector pointing up, into

the controller.

5. Turn the unit on by pressing the power button.

4.2. Manual Shutter Operation

There are two LEDs on top of the unit. The LED next to the power button is green

when the power is on or off when the power is off. The LED next to the enable

button indicates the status of the controller as shown in the table below.

Status LED Color Meaning

Off Shutter is Closed

Green Shutter is Open

Amber Controller is in Unprotected Mode

and Shutter is Open

Red There is an Error

Note that when the shutter is closed and in unprotected mode, the LED will be

off. Additionally, unplugging the shutter from the wall outlet will not change its

mode, so if it is in Unprotected Mode and unplugged, it will still be in Unprotected

Mode when plugged back in again. See Section 4.3.2 for more information on

Unprotected Mode.

The shutter generally defaults to the closed position. The following table outlines

the various conditions that will change the shutters state. For more information

on the meaning of the LED colors and modes, please see Section 4.6.2.

Ø1" Shutters and Controller Chapter 4: Setup and Operation

Rev K, December 4, 2019 Page 7

Condition Shutter State

Open Closed

Depressing the ENABLE button Closes Opens

Power plugged into either wall outlet

or controller Closes Stays Closed

Power button depressed to turn on Closes Stays Closed

Power button depressed to turn off Closes Stays Closed

Unplugging power cord from wall

outlet or controller Stays Open Stays Closed

Unplugging shutter from controller Stays Open Stays Closed

Plugging shutter into controller while

it is on

Shutter will revert to whatever state it indicated

by the controller, usually no change.

To manually control the shutter, after powering on the unit, simply press the ENABLE

button. This will open the shutter. Depressing the button a second time will close the

shutter. If the unit is in an External Modulation Mode, pressing the ENABLE button

once will put the device into Manual Mode without opening the shutter and the Status

LED will flash four times.

The SHB1(T) is set to the last mode it was in when it is powered on. Pressing the

ENABLE button puts it in Manual Mode if it was in Protected or Unprotected External

Modulation Mode. This disables the external modulation input connector (the BNC

connector port labeled TTL Input on the controller). To return the device to Protected

External Modulation Mode, press and hold the ENABLE button for 3 seconds.

The Status LED will flash two times to indicate the device is in Protected External

Modulation Mode, and the shutter will start changing state provided there is a TTL

signal active on the port.

4.3. External Modulation Modes

CAUTION

Prolonged modulation of these shutters will eventually result in premature

component wear and failure. This device is not intended for long-term

continuous modulation.

To control the SHB1(T) shutter state using an external, modulated TTL signal,

connect the signal source to the shutter controller at the BNC TTL Input connector.

Activate the TTL signal source. The shutter will be in the last state it was in when

powered on, therefore if it does not begin modulating, press and hold the ENABLE

button to enter the Protected External Modulation Mode. The TTL requirements are:

 TTL Level Input Voltage

o A High Logic state is 2 – 5 V

o A Low Logic state is 0 – 0.8 V

 At the Modulation Input

o Logic Level High opens the shutter

o Logic Level Low closes the shutter

Ø1" Shutters and Controller Chapter 4: Setup and Operation

Page 8 21690-D02

The maximum continuous operating frequency limit is 10 Hz. The unit can operate up

to 15 Hz for a limited amount of time. After the time limit is exceeded or the

modulation frequency exceeds 15 Hz, the shutter will disable, the Status LED will turn

red, and the interlock will open. See Chapter 5 for more information on how long the

unit can be run from 10 to 15 Hz.

4.3.1. Protected Mode

When the SHB1(T) operates in Protected Mode, the device will shut down if run for

too long over 10 Hz. This is in order to protect the device from overheating. The unit

does not monitor the temperature directly, but the time limit is based on calculations

assuming no heat control at room temperature. If the user utilizes some kind of heat

mitigation system, they may set the unit to Unprotected Mode where the time limit

alarm is ignored and the device will operate continuously. Note that operating the

shutter in Unprotected Mode may damage the unit.

The following table outlines the length of time the device can be operated safely

above 10 Hz.

Protected Mode Specifications Value

Max Operating Freq. Continuous 10 Hz

Max Operating Freq., 30 min 11 – 13 Hz

Max Operating Freq., 10 min 14 – 15 Hz

4.3.2. Unprotected Mode

The SHB1 and SHB1T normally operates in Protected Mode. In this mode, the unit

will disable the blades, turn the Status LED red, and trip the interlock when the unit is

run over 10 Hz and the time limit is reached (see Chapter 5 for more information). In

Unprotected Mode, the unit will not disable under those conditions.

To enter Unprotected Mode, hold both the POWER and ENABLE buttons until the

Status LED flashes amber four times. While in Unprotected Mode, the Status LED will

remain amber, so any condition that normally would be green will now be amber. To

exit Unprotected Mode, depress both buttons until the Status LED flashes green four

times. This will put the device back into Protected External Modulation Mode.

Depressing the ENABLE button while in Unprotected mode, will exit Unprotected

Mode and enter Manual Mode. The LED will turn green.

The table below summarizes the different states and how to enter them.

Current

Mode To Manual Mode To External

Protected Mode

To External

Unprotected Mode

Manual - Hold Enable button

for 3 seconds.

Hold Power and Enable

buttons for 3 seconds.

External

Protected Press Enable button. - Hold Power and Enable

buttons for 3 seconds.

External

Unprotected Press Enable button. Hold Power and Enable

buttons for 3 seconds. -

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