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installation information.
• Complete installation, operation and maintenance information is provided in the instructions supplied with each product.
Failure to comply with these instructions could result in death or serious injury.
© Honeywell International Inc. - June 2001
The FF-SRST Emergency Stop modules with Timer are designed to be used in emer-
gency stop circuits where danger to personnel or machinery is present. This device
has four internal standard safety relays with positive-guided contacts, of which two
of these safety relays are delayed.
In the manual start mode, the module accepts input from the safety device (safety
light curtain, safety mat, safety switches, etc.) between S21/S22 and S31/S32 after
activation of the push-button between S33 and S34.
In the automatic start mode, the module accepts immediate input from the safety
device between S21/S22 and S31/32.
After restart, the normally open safety contacts (13/14, 23/24, 47/48, 57/58) will
close and the normally closed contacts (31/32, 65/66) will open. If an emergency
stop condition occurs (safety device is actuated), the normally open contacts (13/
14, 23/24) will open and the normally closed contact (31/32) will close immediately.
After the selected delay time has elapsed the normally open contacts (47/48, 57/58)
will open and the normally closed contact (65/66) will close.
This emergency stop condition is signalled by the direct safety contacts (13/14, 23/
24, 31/32) for the machine control circuitry to first stop the dangerous motion and
then to remove power after a certain time by the delayed contacts (57/58, 65/66).
(Direct safety contacts)
Category 4
per EN 954-1
Suitable for interfaces
up to
FF-SR Series
FF-SRST Emergency Stop Module with Timer
FEATURES
•Complies with the Machinery Directive
for 98/37/EC, IEC 204, EN 60204, DIN
VDE 0113 and UL 508
•Dual channel input
•Safety outputs: two direct NO contacts,
one direct NC contact, two NO delayed
contacts and one NC delayed contact
•Wide range of fixed and adjustable delay
times
•Switching current from 1 mA to 5 A
•Automatic start or manual start mode
with short-circuit detection on the push-
button input
•Selectable cross-fault detection in
emergency stop control circuit
•LEDs indicate power and internal relays
status
•Mechanical life up to ten million
operations
•Electrical life up to one million
operations
•Overvoltage and short-circuit protection
•Removable terminal strips for ease of
maintenance
•45 mm / 1.77 in width
APPLICATIONS
•Emergency stop circuits on machines
•Category 1 emergency stop circuits per
EN 418 and NFPA79: delayed isolation of
power after machine stoppage
•Door protection: delayed opening of an
interlocked protective gate
Category 3
per EN 954-1
Suitable for interfaces
up to
(Delayed safety contacts)
(Pending)
2
© Honeywell International Inc. - June 2001
ORDERING INFORMATION
FF-SRSTGGGG2
Max.delay time Voltage
D30: 0,3 s (adj. only) 2 = 24 Vac/dc
D50: 0,5 s (fixed only)
001: 1 s R: Time
003: 3 s adjustable
005: 5 s F: Time fixed
010: 10 s
030: 30 s
300: 300 s
Note 1: Contact damage - To ensure the 1 mA
capability during the lifetime of the contact, never
exceed 300 mA or 60 V.
Note 2: Install arc suppressors across load to avoid
module contact arcing and ensure specified contact
life expectancy.
Note 3:Total operations = operations at power factor
1 multiplied by the limitation factor. If the power factor
is 0,5 at 230 Vac and 2 A (1 000 000 operations), the
limitation factor is 0,70. 1 000 000 x 0.70 = 700 000
total operations.
LIMITATION FACTOR FOR
INDUCTIVE LOADS
Power factor < 1 (cos
j
)(see Note 3)
FF-SRST Emergengy Stop Module with Timer
SPECIFICATIONS
• Dual channel Emergency Stop circuits with time delayed contacts
Supply voltage
Nominal voltage 24 Vac/dc (ac: ±10 %, dc: -20 %, +10 %)
Nominal power consumption dc: 3,5 W • ac: 3,5 VA (or dc)
Nominal frequency 50 Hz to 60 Hz
Fuse protection Internal PTC
Restart input Restart delay time Manual start mode: 40 ms; automatic start mode: 500 ms
Emergency stop inputs
Input voltage at S11 23 Vdc at nominal voltage (provided by control module)
Minimum voltage at S12, S22, S32 21 Vdc at nominal voltage
Input current between S11/S12 and S21/S22 40 mA at nominal voltage
Cable resistance between S11/S12,S21/S22, S31/32
50
W
(max.)
Relay outputs
Relay type Safety relay with positive guided contacts
Safety contacts 2 NO, 1 NC, 2 NO off-delayed, 1 NC off-delayed (if Y39/Y40 is jumpered)
Time delay on de-energisation
Adjustable:
FF-SRST
ooo
R2: 0,06 s to 0,3 s; 0,1 s to 1 s; 0,3 s to 3 s; 0,5 s to 5 s; 1 s to 10 s;
3 s to 30 s; 30 s to 300 s /
Fixed:
FF-SRST
ooo
F2: 0,5 s; 1 s; 3 s; 5 s; 10 s; 30 s; 300 s
Repeat accuracy of time delay ± 1 % of set value
Response time Opening of inputs (S11/S12, S21/S22, S31/S32) : 15 ms; Opening in supply circuit (A1(+)/A2(-)): 40 ms
Switching capability Power factor = 1 with resistive load
Current range (min. to max.) 1 mA to 5 A (see Note 1)
Voltage range (min. to max.) 0,1 Vac/dc to 250 Vac/dc
Typical electrical life expectancy Power factor = 1 Vac/dc at 230 Vac (see Note 2)
2 A 1 000 000 operations
5 A 220 000 operations
Typical power factor (cos
j
)Limitation factor (see Note 3)
0,3 0,45
0,5 0,70
0,7 0,85
11
Operating frequency 1200 switching cycles/h (max.)
Fuse rating (external) 6 A time delayed (max.)
Mechanical life 10 million switching operations
General Temperature range -15 °C to + 55 °C / 5 °F to 131 °F
Sealing Housing: IP 40, Terminals: IP 20
Housing material Thermoplastic
Vibration resistance Amplitude: 0,35 mm; frequency: 10 Hz to 55 Hz
Connector connection (max.) 1 x 4 mm2 solid [12 AWG], 1 x 2,5 mm2 [14 AWG],
2 x 1,5 mm2 [16 AWG] stranded wire with sleeve DIN 46288
Connector attachment Removable block terminals with M3,5 screws; wire contacts are enclosed to prevent electrical shock
Mounting Quick install rail mounting EN 50022-35, 35 mm x 15 mm / 1.38 in x 0.59 in size
Weight 400 g / 0.88 lb
CONTACT LIFE FOR 100 %
RESISTIVE LOAD (TYPICAL)
Power factor = 1 (cos
j
)(see Note 3)
107
7
5
3
2
106
105
7
5
3
2
0,5 1 1,5 2
Switching Power [kVA]
Operations
Power factor
0,2
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
0,4 0,6 0,8 1
Limitation factor F
(Direct safety contacts)
Category 4
per EN 954-1
Suitable for interfaces
up to
Category 3
per EN 954-1
Suitable for interfaces
up to
(Delayed safety contacts)
(Pending)
© Honeywell International Inc. - June 2001
3
13
K1
K1t
K2t
K1t
K2
K2t
S31 S32 S12
S12
S13
S14
S21
S22
S31
S32
Y39
Y40
S13 S14
A1
(+)
A1(+)
A2(-) S21
S11
13 23 31 47 57
S11
(+)
23 31 47 57 65
65
14 24 32 48 58 66
14
Y39 S21
(-)
A2
(-)
Y40 S22S33 S34
24 32 48 58 66
MOUNTING DIMENSIONS
Width: 45 mm/1.7 in; Height: 74 mm/2.91 in; Depth: 121 mm/4.76 in
FRONT PANEL
REMOVABLE TERMINAL BLOCKS
INSTALLATION DIAGRAM
INTERNAL CIRCUITRY
FUNCTIONAL DIAGRAM
SETTING OF START MODE
Rail
121 ± 0,4
73,2
45
A1(+) A2(-) S11(+) S12 S31S13 S22 S32 S33 S14 S34 Y39 Y40 13 23 31 47 57 65
14S21(-) 24 32 48 58 66
Overvoltage and
short-circuit protection
Monitoring logic Timer
release delay
K1
K1
24V
Power
K1
K1t
K2t
K1t
K1t
K2
K2
K2
K2t
K2t
Start
push-button
E-stop
K1
K2
K1t
K2t
* Line fault detection
at the start push-button
Tv:
delay time
Closed
Opened
Closed
Opened
Input
Output
Delayed output
Removable
Terminal Strip
Start Jumper Start push-button This module offers the possibility to function in the automatic
Mode between S13/S14 between S33/S34 start mode or manual start mode.
Manual start Insert the start push-button between terminals S33/S34
mode not connected for manual start mode.
Automatic start Insert a jumper between S13/S14 for automatic start mode
mode connected to function.
SETTING OF THE DELAYED CONTACTS
The off-delayed safety relays K1t and K2t (safety contacts 47/48 to 65/66) are only operational, if a jumper is set between Y39/Y40.
4
© Honeywell International Inc. - June 2001
Dual-channel safety door monitoring (with cross-fault monitoring, manual start mode)
The FF-SRST Emergency Stop module may also monitor the status of locking or interlocking devices (usually safety switches) of protective gates.
When the protective gate is open, the initiation of the hazardous motion is inhibited. When the door is closed again, the next machine cycle can start,
but only after initiating a manual restart sequence.
After opening the door, the two external safety switch contacts Sa and Sb will open and two internal safety relays K1 and K2 will de-energize. The
normally open safety contacts (13/14, 23/24) will open and the normally closed contact (31/32) will close relaying the stop condition to the machine
control circuitry. The off-delayed safety relays K1t and K2t will de-energize, the normally open safety contacts (47/48, 57/58) will open and the
normally closed contact (65/66) will close after the specified time delay has elapsed (see note (D)). These delayed safety contacts may be used to
isolate the machine from power (category 1 stop per EN 418) and NFPA79.
When closing the door, Sa and Sb will close and the module is ready to be restarted (see note (B)). Then, the four internal relays K1, K2, K1t and
K2t will energize immediately. (see note (D)). All normally open safety contacts (13/14, 23/24, 47/48, 57/58) will close and the normally closed
contacts (31/32, 65/66) will open, allowing the machine to operate.
APPLICATION EXAMPLES
Dual channel emergency stop circuitry (with cross-fault monitoring, manual start mode, external contactors)
If an emergency stop condition occurs (emergency push-button or another safety device is actuated), the internal relays K1 and K2 de-energize
immediately. The normally open contacts (13/14, 23/24) will open and the normally closed contact (31/32) will close. This emergency stop
condition issignalled by these safety contacts for the machine control circuitry (e.g. a speed driver) to stop hazard.
The internal relays K1t and K2t will de-energize after the selected delay time has elapsed, leading to the opening of the normally open contacts (47/48,
57/58) and the closure of the normally closed contacts (65/66)(see note (D)). These contacts may be used to remove the main power of the stopped
machine (category 1 emergency stop per EN 418) and NFPA79.
The emergency-stop condition can be reset while de-activating and activating the connected safety devices (inputs: S22 and S32). After restarting the
module (manual or automatic restart: see note (B)), all internal safety relays K1, K2, K1t and K2t will energize immediately. All normally open contacts
(13/14, 23/24, 47/48, 57/58) will close and the normally closed contacts (31/32, 65/66) will open, allowing the machine to operate (see note (D)).
L1
L2
L3
M
Delayed power
removal by contacts
47/48 and 57/58 of
FF-SRST Emergency
Stop module
with timer
Instant stop
command by contacts
13/23 and 31/32 of
FF-SRST Emergency
Stop module
with timer
Fuses
K3
K4
Speed driver
FF-SRST
Power of
speed driver
To speed driver
L1
(+)
N
(-)
A1(+) S31 S33 S34 S32 S22 S21 13 23 31 47 57 65
48322414Y40Y39S14S13S12S11A2(-) 58 66
Fuse
Fuses
Fuses
Start K3
K4
(C)
(B)
(C)
(D)
(B)
(A) K4
K3
K3 K4
E-stop
FF-SRST
L1
(+)
N
(-)
Fuse
Fuses
Start
Sliding guard (closed position)
closed
Machine
control circuitry
Delayed isolation
from power
Actuated normally open contact: closed position
A1(+) S31 S33 S34
Sa
Sb
S32 S22 S21 13 23 31 47 57 65
14Y40Y39S12S11S14S13A2(-) 24 32 48 58 66
open
(B)
(B)
(D)
APPLICATION NOTES
Note (A): DUAL CHANNEL SAFETY DEVICES:
This may be an emergency stop push-button in series with
dual output safety switching devices (OSSD) such as safety
light curtains (FF-SB, FF-LS), single beam
(FF-SPS4), modular safety light curtain (FF-SCAN), safety
mat (FF-SM), safety laser scanner (FF-SE), or safety limit
switches (i.e. 2CLS, GK).
Note (B): START MODES:
Manual start mode: Insert start push-button between S33/
S34; no jumper must be set between S13/S14.
Automatic start mode: Insert jumper between S13/S14; the
start push-button is omitted.
Note (C): EXTERNAL CONTACTORS:
If contact reinforcement via external safety contactors with
positive-guided contacts is necessary, the proper operation of
the external contactors must be monitored by
looping their normally closed contacts into the restart loop
(manual start mode: S33/S34; automatic start mode:
S13/S14).
Note (D): DELAYED CONTACTS:
The off-delayed safety relays K1t and K2t (safety contacts
47/48, 57/58, 65/66) are only operational, if a jumper is set
between Y39/Y40.
Warranty and remedy
Honeywell warrants goods of its manufacture as being free of defective
materials and faulty workmanship. Contact your local sales office for warranty
information. If warranted goods are returned to Honeywell during the period of
coverage, Honeywell will repair or replace without charge those items it finds
defective. The foregoing is Buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of merchantability and
fitness for a particular purpose.
While we provide application assistance, personally, through our literature and
the Honeywell web site, it is up to the customer to determine the suitability of
the product in the application.
Honeywell Sensing & Control
11 West Spring Street
Freeport, Illinois 61032
USA
Honeywell Sensing & Control
21 Chemin du Vieux Chêne
38240 Meylan Cedex
France
This publication does not constitute a contract between Honeywell and its customers. The contents may be changed at any time without notice. It is the customer's
responsibility to ensure safe installation and operation of the products. Detailed mounting drawings of all products illustrated are available on request.
© 2001 Honeywell International Inc. All rights reserved.
Specifications may change at any time without notice. The information we
supply is believed to be accurate and reliable as of this printing. However, we
assume no responsibility for its use.
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E-mail: info.sc@honeywell.com
www.honeywell.com/sensing
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