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.
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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. -