Samson 3710 series Service manual

Mounting and
Operating Instructions
EB 8392 EN
Edition December 2012
Type3710 Reversing Amplier in standard version with pressure gauges for Y1 and Y2
Series 3710
Type3710 Reversing Amplier

Denition of signal words
DANGER!
Hazardous situations which, if not
avoided, will result in death or seri-
ous injury
WARNING!
Hazardous situations which, if not
avoided, could result in death or seri-
ous injury
NOTICE
Property damage message or mal-
function
Note:
Additional information
Tip:
Recommended action

2 EB 8392 EN
Note on these mounting and operating instructions
These mounting and operating instructions (EB) assist you in mounting and operating the de-
vice safely. The instructions are binding for handling SAMSON devices.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON's After-sales Service
department (aftersalesser[email protected]).
Referenced documentation
The documents for the devices used in combination with the reversing amplier apply in ad-
dition to these mounting and operating instructions.
The mounting and operating instructions for all supplied devices are included in the delivery.
The latest versions of the documents are available on our website at www.samson.de > Prod-
uct documentation.

Contents
EB 8392 EN 3
1 General safety instructions.............................................................................4
2 Markings on the device .................................................................................5
2.1 Article code ...................................................................................................5
2.2 Nameplate ....................................................................................................5
3 Design and principle of operation ..................................................................6
3.1 Technical data ...............................................................................................7
3.2 Materials .......................................................................................................7
4 Attachment to positioners and limit switches...................................................8
4.1 Attachment to positioners and limit switches (device index .05 and higher) .........8
4.2 Attachment to positioners and limit switches (below device index .05) ................8
4.3 Attachment to Type3725 Positioner .................................................................8
4.4 Note on attachment to rotary actuators according to VDI/VDE3845 ...............10
4.5 Attachment with Type4708-54 Supply Pressure Regulator ...............................11
4.5.1 Note on attachment to Type3275 Piston Actuator...........................................12
5 Pneumatic connections.................................................................................12
5.1 Pressure gauges ...........................................................................................12
6 Malfunctions ...............................................................................................14
7 Accessories for Type3710 ...........................................................................16
8 Dimensions in mm.......................................................................................17

4 EB 8392 EN
General safety instructions
1 General safety instructions
For your own safety, follow these instructions concerning the mounting, start-up, and opera-
tion of the device:
−The device is to be mounted, started up or operated only by trained and experienced
personnel familiar with the product. According to these mounting and operating instruc-
tions, trained personnel refers to individuals who are able to judge the work they are as-
signed to and recognize possible dangers due to their specialized training, their knowl-
edge and experience as well as their knowledge of the applicable standards.
To avoid damage to any equipment, the following also applies:
−Proper shipping and storage are assumed.

EB 8392 EN 5
Markings on the device
2 Markings on the device
2.1 Article code
Reversing amplier Type3710- 1 x x 1 0x x 0
Housing material
Aluminum 0
Stainless steel 13
Connecting thread
ISO228/1-G¼ 1
¼-18NPT 2
Ambient temperature range
–25 to +80°C 0
–50 to +80°C 13
–60 to +80°C 23
Degree of protection
IP65, lter check valve made of polyamide 2
IP65, lter check valve made of stainless steel 1.4305 3
2.2 Nameplate
3710-
3-
Made in France
Var.-ID
1
23
4
1Article code
2Production ID
3 Permissible ambient temperature
4Conguration ID

6 EB 8392 EN
Design and principle of operation
3 Design and principle of oper-
ation
The reversing amplier allows double-acting
pneumatic actuators to be operated using
single-acting positioners or limit switches.
The positioner creates an output signal pres-
sure Y1, to which the air pressure Y2 is add-
ed. The reversing amplier uses the supply
pressure Z as auxiliary power.
The following rule applies:
Y1 + Y2 = Z
Example:
Y1 of the positioner 1bar
Supply pressure Z 6bar
Resulting Y25bar
Z
Y
2
Y
1
Z
Y
1
Output 38 Supply 9
Positioner
Pressure is added to Y1
to create 6bar
Vent plug (IP65)
Chamber 1
Chamber 2
Reversing amplier Supply air (max. 6bar)
Pneumatic rotary
actuator (double-
acting)
CSupply air
Y1Output signal pressure
Y2Resulting (opposing) signal pressure
1) Air chamber 1 opens the valve when the pressure rises
2) Air chamber 2 closes the valve when the pressure rises
1)
2)
Fig.1: Schematic diagram of Type3710 Reversing Amplier

EB 8392 EN 7
Design and principle of operation
3.1 Technical data
Type3710 Reversing Amplier
Permissible supply pressure 6bar
KV
coefcient
to ll the actuator with air 0.11
to vent the actuator 0.12
Leakage Z to Y2≤20 l/h when Y2 = 0bar and Z = 6bar
Y2 to vent plug ≤40 l/h when Y1 = 0bar and Y2 = 6bar
Connections ¼-18NPT · ISO228/1-G¼
Degree of protection IP65
Compliance
Permissible ambient temperature –25 to +80°C · –13 to +176°F
Low-temperature version:
–50 to +80°C · –58 to +176°F
–60 to +80°C · –67 to +176°F
Weight 0.5 kg · 1.2 kg for stainless steel version
3.2 Materials
Materials
Housing and cover Powder-coated aluminum
Special version in stainless steel 1.4404
Diaphragm plate Aluminum, yellow chromated
Seat and plug Brass
Diaphragms Silicone rubber FVMQ · PTFE for low-temperature version

8 EB 8392 EN
Attachment to positioners and limit switches
4 Attachment to positioners
and limit switches
The description in section4.1 and 4.2 ap-
plies to the following devices:
−Type 3730 Positioner
−Type 3731 Positioner
−Type 3766 Positioner
−Type 3767 Positioner
−Type 3768 Limit Switch
ÎCheck device index before attachment.
Note:
See the last two gures of the cong-
uration ID written on the nameplate
for the device index.
4.1 Attachment to positioners
and limit switches (device
index .05 and higher)
1. Fasten the reversing amplier directly to
the positioner/limit switch using two M5
screws.
ÎOn mounting the device, make sure that
the two O-rings (1.2 in Fig.2 left) are in-
serted properly into their groove.
Tip:
If you lose any O-rings for the revers-
ing amplier, you can order more
(order number 8421-9064).
4.2 Attachment to positioners
and limit switches (below
device index .05)
Required accessories:
Connecting plate (1400-9621) (2 in Fig.2)
1. Screw the special nuts (1) included in the
accessories for the connecting plate (2)
into the holes of the positioner.
2. Insert the O-rings (1.2) into the grooves
of the connecting plate (2). Slide the hol-
low bolts (1.3) into the threaded ports
and fasten tight.
3. Fit O-rings (1.2) on the reversing ampli-
er. Place it on the connecting plate (2)
and fasten tight.
4.3 Attachment to Type3725
Positioner
Required accessories:
Connecting plate (1402-0512) (1 in Fig.3)
1. Fasten the connecting plate (1) between
the positioner and the reversing amplier
using two M5x50 screws (2).
Note:
The screws supplied with the connect-
ing plate have a TORX PLUS® prole
and must be tightened using a suit-
able tool.



EB 8392 EN 9
Attachment to positioners and limit switches
Output Supply
1 1.2 1.21.32
Y1
Y2
1.4
1.2
1.4
1Special nuts
1.2 O-rings
1.3 Hollow bolts
1.4 Fastening holes
2Connecting plate
Attachment to Types3730, 3731, 3766, and 3767 as well
as Type3768 Limit Switch below device index .05
Fig.2: Attachment to Types3730, 3731, 3767, and 3766 Positioners as well as Type3768 Limit
Switch
Type3725 Positioner
Reversing amplier
1
2
1Connecting plate
2M5x50 screws (screw head with TORX PLUS® prole)
Fig.3: Attachment to Type3725 Positioner

10 EB 8392 EN
Attachment to positioners and limit switches
4.4 Note on attachment to
rotary actuators according
to VDI/VDE3845
The description applies to the following de-
vices:
−Type3730 Positioner (angle of rotation
>90°)
−Type 3766 Positioner
−Type 3767 Positioner
−Type 3768 Limit Switch
ÎFor the attachment of the reversing am-
plier to the above listed devices with
mounting kit 1400-8815, remove the
vent plug (6) from the intermediate piece
(5) and insert into the positioner (see
Fig.4):
1. Place the O-ring (3) onto the screw plug
(1).
2. Screw the screw plug (1) into the vent
opening of the intermediate piece (5).
3. Thread the threaded bushing (2) and re-
taining washer (4) into the free cable
gland of the positioner.
4. Screw vent plug (6) into the threaded
bushing (2).
5. Fasten the reversing amplier directly to
the positioner/limit switch using two M5
screws.
Note:
The vent plug included in the mount-
ing kit (1400-8815) has IP54 de-
gree of protection. For a higher de-
gree of protection, select a suitable
vent plug from the accessories listed
in section7.

31
5
624
1Screw plug
2Threaded bushing
3 O-ring
4Retaining washer
5Intermediate piece
6Vent plug
Fig.4: Relocating the vent plug on attachment to rotary actuators according to VDI/VDE3845