ace and all control elements that affect safety.
Strictly adhere to all installation instructions.
Failure to comply with these instructions could result
in death or serious injury.

PRODUCT DESCRIPTION
The FF-SR05936 Standstill Monitor detects the zero
speed of 3 phase and single phase induction motors.
This module measures (between Z1/Z2) the back EMF of
the disconnected motor from the terminals of one stator
winding. When the EMF has decreased to a near zero
value, the FF-SR05936 detects that the motor has
stopped and energizes its output relays. In addition,
FF-SR05936 monitors the connections to the motor for
broken wires. If an open (line break) is detected, the
output relay contacts go in the de-energized position as if
the motor was running. After the break has been
repaired, the module is operational again for standstill
monitoring without need to be reset.

APPROVALS
CE
The product, packaging and
documentation of FF-SR Series
products carry the CE mark; the CE
declaration of conformity is available
upon request.
UL
This product is approved by
Underwriters Laboratories Inc.
According to Canadian and U.S.
safety requirements.


DIRECTIVES COMPLIANCE
Machine Directive 98/37/EC
Low Voltage Directive 73/23/EC
Electromagnetic Compatibility Directive 89/336/EC

REGULATIONS COMPLIANCE
Regulation Title
OSHA 29 CFR
1910.212
General Requirements for
(guarding of) All Machines
OSHA 29 CFR
1910.217
(Guarding of) Mechanical
Power Presses

STANDARDS COMPLIANCE
Standard Title
ANSI B11.1
Mechanical Power Presses
ANSI B11.2
Hydraulic Power Presses
ANSI B11.19
Safeguarding when Referenced
by the Other B11 Machine Tool
Safety Standards
ANSI/RIA R15.06
Safety Requirements for
Industrial Robots and Robot
Systems
UL 508
Underwriters Laboratories
EN 292
Safety of Machinery - Basic
Concepts, General Principles
for Design
EN 60204
Safety of Machinery - Electrical
Equipment of Machines
EN 954
Safety of Machinery - Safety
related parts of control system
2

107010-14 EN FR26 GLO 304 Printed in Germany
SPECIFICATIONS
Input
Nominal voltage
120 Vac (-15 %, +10 %), 230 Vac (-20 %, +10 %), 24 Vdc (-20 %, +10 %)
Nominal consumption
120 or 230 Vac : 4 VA; 24 Vdc: 2.5 W
Nominal frequency
50 to 60 Hz
Measuring input protection
690 Vac
Engaging voltage
40 mV
Release voltage
20 mV
Output
Contact complement
2 NO contacts, 2 NC contacts
Contact time
Safety relay, positive-guided
Response time
2 s after EMF drops below 20 mV
Switching Capability
Power factor = 1 with resistive load
Current Range (min. to max.)
10 mA to 10 A
Voltage Range (min. to max.)
10 to 250 Vac/dc
Typical Electrical Life Expectancy
3 A
5 A
10 A
Power factor = 1 at 230 Vac/dc (note 1)
1,000,000 operations
500,000 operations
220,000 operations
Typical Power Factor (cos



)
0,3
0,5
0,7
Limitation Factor (note 2)
0,45
0,70
0,85
Fuse rating
6 A gL (max.)
Mechanical life
Ten million switching operations
General
Temperature range
-15
°C to + 55 °C (5 °F to 131 °F) at max. 90 % humidity
Sealing
Housing IP 40 ; Terminals IP 20
Housing material
Thermoplastic
Vibration resistance
Amplitude 0,35 mm Frequency 10 to 55 Hz
Conductor connection
1 x 4 mm
2
solid (max.) [12 AWG] or 2 x 1.5 mm
2
(max.) [16 AWG] stranded wire with sleeve
Conductor attachment
M 3,5 screw terminals; wire contacts are enclosed to prevent electrical shock
Mounting
Quick install rail mounting EN 50022-35
Weight
325 g (0.72 lb.)



NOTE 1: Install arc sup-
pression device across load
to avoid module contact
arcing and ensure specified
relay life expectancy.
NOTE 2: Total operations =
operations at power factor 1
multiplied by the limitation
factor. if the power factor is
0,5 at 230 vac, 3 A
(1,000,000 operations), the
limitation factor is 0,70.

1,000,000 x 0,70 = 700,000
total operations.
FIG 1. CONTACT LIFE FOR 100 %
RESISTIVE LOAD (typical) (note 1)
power factor = 1 (cos
)


FIG 2. LIMITATION FACTOR FOR
INDUCTIVE LOADS (note 2)
power factor < 1 (cos
)

Switching power P (kVA)
Operati
on
Power factor
Li
mi
tati
on factor F
107010-14 EN FR26 GLO 304 Printed in Germany



3

FIG 3. CURRENT VS. TEMPERATURE LIMIT


Figure 3. displays the maximal recommended external
temperature versus the total load of all the safety module
contacts. To use this curve, do the following:
(1)
Follow the horizontal line from the value (vertical axis)
equal to the current inside the safety module contacts
and note intersection of the appropriate curve.
(2)
Follow the intersection point down to determine the
maximal
recommended
ambient

temperature.
(Ex: 4 A current inside each two safety contacts,
then T = 43
°C (109 °F).
If the module is located in a higher temperature
environment, the lifetime of the electronic components
may be reduced. Ventilation of the cabinet may be
required.

MECHANICAL INSTALLATION
The FF-SR05936 must be installed inside a NEMA 3 (IEC
IP54) rating enclosure or better. The module can be
clipped easily onto a 45mm width DIN rail (see figures 4
and 5 below for installation and removal).

FIG 4. MOUNTING DIMENSIONS
(for reference only)








FIG 5. INSTALLATION DIAGRAM


CONTROL RELIABILITY
Control Reliability means that the device, system or
interface shall be designed, constructed and installed
such that a single component failure within the device,
interface or system shall not prevent normal stopping
action from taking place but shall prevent a successive
machine cycle. (ANSI B11.19-1990, 5.5)
OSHA 29 CFR 1910.217 states that the control system
shall be constructed so that a failure within the system
does not prevent the normal stopping action from being
applied to the press when required, but does prevent
initiation of a successive stroke until the failure is
corrected. The failure shall be detectable by a simple
test, or indicated by the control system.
Honeywell uses self-checking techniques which combine
reliability with safety. This means that a faulty component
in our system will make the safety control modules fail in
a safe mode.

FIG 6. MODULE FRONT PANEL


a Width: 45 mm 1.77 in.
b Height: 74 mm 2.91 in.
c Depth: 121 mm 4.76 in
Rail
Cont
i
nuous
c
u
rrent

Ambient Temperature
Current via two contact
rows (same current for
each contact row)
Current via one
contact row
A1/A2
Zero
Motion
Continuity
Z1/Z2
4

107010-14 EN FR26 GLO 304 Printed in Germany
ELECTRICAL INSTALLATION


ELECTRICAL SHOCK
Remove power from FF-SR Series control modules and
machine during installation.
Failure to comply with these instructions could result
in death or serious injury.

Multiple wiring configurations are possible for the
FF-SR05936 single channel standstill monitor safety
module. General guidelines are provided because there
are various ways to interface the module to machine
control circuitry. Refer to the important warnings (page
5) and the application examples (page 6).

FUNCTIONAL DESCRIPTION
This module measures (between Z1/Z2) the back EMF of
the disconnected motor from the terminals of one stator
winding. When the EMF has decreased to a near zero
value, the FF-SR05936 detects that the motor has
stopped and energizes its output relays. In addition,
FF-SR05936 monitors the connections to the motor for
broken wires injecting a dc current between terminals Z1,
Z2. If an open (line break) is detected, the output relay
contacts go in the de-energized position as if the motor
was running. After the break has been repaired, the
module is operational again for standstill monitoring
without need to be reset.


We do not recommend to use the FF-SR05936 standstill
monitor together with induction motors driven by
frequency variators, speed drivers or soft starters .
Eventually present dc signal parts may cause the module
to detect a broken wire.

One or more FF-SRE3081 Extension Modules or external
contactors with positively driven contacts can be used to
multiply the number of contacts of the FF-SR05936
standstill monitor module. If multiple safety contacts are
used in parallel with one load, the maximum admissible
current can be increased.

FIG 7. FUNCTIONAL DIAGRAM




A1 - A2
Z1/Z2
U
H
33 - 34
43 - 44
Z1/Z2
11 - 12
21 - 22


FIG 8. TYPICAL CONNECTION DIAGRAM




INPUT
CONTACT CLOSED
CONTACT CLOSED
CONTACT OPENED
CONTACT OPENED
Broken wire
detection
Z1 / Z2
Rotation
speed
Z1 / Z2
S
uppl
y
on
Motor on
S
t
op
Motor sl
ow
sdow
n
M
o
tor
S
t
andstill
B
r
oken w
i
re
detecti
on





Motor on
B
r
oken w
i
re
detecti
on






F
59361
107010-14 EN FR26 GLO 304 Printed in Germany



5

APPLICATION WARNINGS

IMPROPER TIME DELAY USE
Always use stand still monitor module connected to non safety related machine operation and use safety control
modules as e-stop, door, two-hand control to immediately stop dangerous motion.
CONTACT WELDING
Always protect all safety contacts with correctly rated fuses. These fuses must never exceed the rated FF-SR05936
safety output capability t