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. -

Ø1" Shutters and Controller Chapter 4: Setup and Operation
Rev K, December 4, 2019 Page 9
4.4. Default to On
The default to on setting allows the SHB1(T) to automatically power ON when DC is
applied; for users that require auto power ON when DC is applied without pressing the
POWER button. To enter or exit this setting, follow the steps below:
1. Connect the DC power supply.
2. Press and hold the Enable button; then press and hold the Power button
simultaneously for (1 second).
3. Both the Power and Enable Led will light.
4. Release both the Power and Enable buttons.
5. The Power and Enable LEDs will remain on for >3 seconds.
6. The controller will now reboot and power on (Power LED on).
Note, when set to Default to On, the POWER button functions normally. Older units
may not have the Default to On feature. Please contact Thorlabs Tech Support if you
believe your unit may need to be updated to include this feature.
4.5. Interlock Output
An interlock output is provided. In the event of a failure, the interlock circuit will trip
and the contacts will open. The interlock uses contacts to represent the state of
operation.
The contacts are set NO (Normally Open). If the contacts are NO, the power is OFF
and DC is disconnected. In a normal operating condition the contacts will be closed
where the feedback monitor does not detect any error.
There are three different error conditions where the contacts would be in an open
state. These error conditions would result when:
 The shutter is not changing state with reference to its drive signal, such as a
jammed blade.
 An over temperature condition has been detected.
 The maximum drive frequency of 15 Hz is exceeded.
All error conditions result in the Status LED changing to red.
Specification of Interlock Contacts
Max Operating voltage 12 VDC
Max Current 1 A
Mating Connector 2.5 mm Mono Phono Jack
If you wish to make use of the Interlock feature you will need to acquire the
appropriate connector and wire it to your device. The Interlock input only accepts a
2.5 mm mono phono jack. This connector is readily available at most electronics
stores.
Figure 4 Remote Interlock Connector (Not Included)

Ø1" Shutters and Controller Chapter 4: Setup and Operation
Page 10 21690-D02
4.6. Indicators
4.6.1. Power LED
The Power LED will be lit green when the power is on and dark when the power is off.
4.6.2. Status LED
The table below outlines the color of the Status LED and the meaning depending
on the mode. When the Status LED turns red, the device will shut down until the
user cycles the power. However, when the device is in Unprotected Mode, the
Status LED will still turn amber 15 seconds before an over temperature condition
and stay amber when an over temperature condition occurs, but the device will
not shut down.
Mode Shutter
Closed
Shutter
Open
Over Temp.
Warning
Over
Temp.
Max Freq.
Exceeded
Blade
Jammed
Manual      
External
Protected   1   
External
Unprotected   2   
 LED is green  Not applicable in that mode
 LED is amber  LED is off
 LED is red
1LED will turn solid amber 15 seconds prior to shut down. It will no long turn on and off as shutter opens
and closes.
2LED will turn solid amber 15 seconds prior to when shut down would occur in protected mode.
However, in unprotected mode, unit will not shut down.

Ø1" Shutters and Controller Chapter 4: Setup and Operation
Rev K, December 4, 2019 Page 11
4.7. Timing Performance
Figure 5 SHB1(T) Timing Driven by SHB1(T) Shutter Controller
Time
(ms, Typ)
Time
(ms, Max) Definitions
I  A 11 13 Delay from input pulse rising edge to initiation
of shutter opening.
A  C 10 12 Rising edge to 100% open.
I  C 21 25 Delay from input pulse rising edge to shutter
fully opening.
D  E 15 17 Delay from fall of input pulse to initiation of
shutter fully closing.
E  G 9 11 Falling edge to 100% closed.
D  G 24 26 Delay from fall of input drive to shutter fully
closed.
Minimum Drive Pulse (MDP)
These measurements use the MDP, which is the minimum pulse to drive the minimum
open time (I  D).
I  D 25 26 Minimum pulse to drive minimum open time.
C  E 19 21 Minimum exposure pulse; @ top of pulse.
B  F 28 30 Minimum exposure pulse; @ 50% of pulse.
A  G 35 37 Minimum exposure pulse; @ bottom of pulse.
5 V
0
Open
Close
External Modulation
Input Pulse
Shutter Response
IA
B
C
DE
F
G

Ø1" Shutters and Controller Chapter 4: Setup and Operation
Page 12 21690-D02
4.8. Typical Performance
The time it takes to open the shutter or close the shutter (IA and DE as shown in
Figure 5) are constant characteristics of the device. The time delay for both
opening and closing is a result of the time it takes to energize the coils.
The net effect is the delay from the initiation of the starting pulse to the shutter
responding (IA) is typically 11 ms. Similarly, the closing time (DE) is typically
15 ms.
The mechanical rise time of the shutter is given as AC in Figure 5. The fall time is
given as EG. The typical values for the rise and fall times respectively are 12 ms
and 9 ms.
Therefore, the total time it typically takes for the shutter to open would be IC or
21 ms. The total time it typically takes for the shutter to close would be DG or
24 ms. Depending on your application, some or all of these values are important
to note.
4.9. SHB1T Coating Performance
The plot above gives the typical reflectance of the PTFE coating on the blades of
the SHB1T. This data is not guaranteed and should be used only as a reference.

Ø1" Shutters and Controller Chapter 5: Specifications
Rev K, December 4, 2019 Page 13
Chapter 5 Specifications
All values at 25 °C unless otherwise noted.
Specification Value
Electrical Specifications (Shutter Mechanism)
External Modulation Input Voltage, TTL Low: 0 – 0.8 VDC
High: 2.0 – 5.0 VDC
Coil Resistance 8.5  ± 2.5%
Shutter Drive Voltage 7.0 VDC Typ, 8.0 VDC Max
Controller Drive Type PWM @ 20 KHz
Performance Specifications
Operating Temperature 15 – 40 °C
Operating Freq. Over Operating Temp Range 0 – 15 Hz
Min Exposure Pulse3 28 ms Typ, 30 ms Max
Exposure Accuracy4 6 ± 0.5 ms
Exposure Repeatability Jitter5 <4 ms
Jitter Rising Edge ≤10 Hz 1.7 ms Typical, 4 ms Max
Jitter Falling Edge ≤10 Hz 1.7 ms Typical, 4 ms Max
Jitter Rising Edge 11 – 15 Hz 4 ms Typical, 8 ms Max
Jitter Falling Edge 11 – 15 Hz 4 ms Typical, 8 ms Max
Rise Time 10 ms Typical, 12 ms Max
Fall Time 9 ms Typical, 11 ms Max
Protected Mode
Max Operating Freq., Continuous6 10 Hz
Max Operating Freq., 30 min 11 – 13 Hz
Max Operating Freq., 10 min 14 – 15 Hz
Unprotected Mode
Max Operating Freq., Continuous6 15 Hz
Overheat protection disabled
Mechanical Specifications
Aperture Diameter 1.00" (25.4 mm)
Boxed Weight 3 lbs (1.4 kgs)
Number of Blades 5
Blade Finish SHB1: Polished Stainless Steel
SHB1T: PTFE Coated
Electrical Specifications (Power Supply)
AC Line Voltage, Frequency 100 – 240, 47 – 63 Hz
AC Current 0.4 A
DC Voltage 5.0 VDC @ 2.4 A
3Measured using the minimum drive pulse (MDP) of 25 ms measured at 50% open.
4Referenced to the external input drive pulse over a range of 3 to 10 Hz.
5Measured 50 times repeatedly over a range of 3 to 10 Hz.
6Shutter can get very hot if used outside of heat-sinking mount, allow 5 minutes to cool before handling.

Ø1" Shutters and Controller Chapter 6: Interface Connector
Page 14 21690-D02
Chapter 6 Interface Connector
The interface connector on the SHB1(T) is a 4-pin mini-DIN shielded female
connector that accepts the 4 pin mini-DIN male connector.
The pin descriptions are as follows:
Pin Description
1 Shutter Detect
2 Modulation +
3 +5 VDC
4 Modulation -
SHIELD GND
Figure 6 SHB1(T) Pin-Out
Figure 7 SHB1(T) Pin-Out
2
4
1
3
1
3
2
4

Ø1" Shutters and Controller Chapter 7: Cleaning and Maintenance
Rev K, December 4, 2019 Page 15
Chapter 7 Cleaning and Maintenance
The SHB1(T) shutter and controller can be cleaned using a soft cloth. If needed,
the cloth can be dampened with some isopropyl alcohol. Avoid using any
solvents on or near the unit as well as water as this may cause the blades to rust.
The SHB1(T) incorporates five shutter blades. These blades are thin (0.003") and
lightweight making them very delicate. Please do not insert any objects into the
shutter where the blades may be hit. This may cause a blade to be slightly bent
hampering performance.
Do not place the shutter head close to any magnetic and ferrous materials. It
may affect the performance of the coils within the shutter. Maintain a distance of
at least 1/8" from any ferrous materials. While both sides are susceptible, the
front face is more susceptible to interference.

Ø1" Shutters and Controller Chapter 8: Troubleshooting
Page 16 21690-D02
Chapter 8 Troubleshooting
See below for possible troubleshooting issues.
Problem Solutions
Power LED not enabled after
pressing the Power ON
button.
Check the AC cord IEC connector is properly
connected to the switching power supply and that it is
connected to a live AC mains outlet.
Check DC plug is fully inserted into the controller's DC
jack labeled 5 VDC 2.4 A.
Shutter does not open or
close.
Check the SHB1(T) shutter cable 4 pin mini-DIN plug
has arrow facing up and is fully inserted into the
connector labeled OUTPUT.
Status LED turned amber.
In Protected Mode: Status LED should be green under
normal operating conditions, and turn amber as a
warning to state there are 15 seconds until shutdown
(at modulation frequencies of 11 to 15 Hz).
See Section 4.3.1.
Status LED turned red.
In Protected Mode: If modulation frequency is >10 Hz,
a timeout period is applied to disable the shutter drive
circuit after the 15 second amber LED warning.
Shutter operation is erratic
or stuck.
Verify the shutter head is not located near magnetic
sources or directly against ferrous materials, especially
the front surface.
Unit powers on when DC
power is applied.
“Default to On” mode has been set. Follow steps on
Section 4.4 to disable.

Ø1" Shutters and Controller Chapter 9: Mechanical Drawing
Rev K, December 4, 2019 Page 17
Chapter 9 Mechanical Drawing
Ø 2.25 "
(57.2mm)
3x Ø 0.096 "
2.4mm
R1.03 "
(26.0mm)
0.90 "
(22.8mm)
0.57 "
(14.6mm)
SM1 (1.035 " -40)
Internal Threads
0.45
"
(11.4mm)
0.92 "
(23.4mm)
0.85 "
(21.6mm)
0.50 "
(12.6mm)
Ø 1.00"
(25.4mm)
0.38 "
(9.7mm)
Cable Length - 35"

Ø1" Shutters and Controller Chapter 10: Declaration of Conformity
Page 18 21690-D02
Chapter 10 Declaration of Conformity