SR125SMS45 Stop Motion Sensing Unit Safety Monitoring Relays

SR125SMS45 Stop Motion Sensing Unit Safety Monitoring Relays
Safety Monitoring Relays
SR125SMS45
Stop Motion Sensing Unit
• Power requirements—the SR125SMS45 will accept 24 VDC or 110 VAC
• Motion detection input—the SR125SMS45 detects the stop condition of all
types of AC or DC motors by sensing the motor’s back EMF across terminals
Z1, Z2 and Z3
• Drive compatible—the SR125SMS45 will function with electronic motor control
devices such as variable speed controllers, DC injection brakes, etc.
• Selectable speed limit—the SR125SMS45 has 1 N/O and 1 N/C outputs that
are switched when motor speed reaches the adjustable preset limit (0.01 to
0.10 V) for the particular output
• Auxiliary output—the SR125SMS45 has 2 solid state auxiliary signaling outputs
Specifications
Electrical
Power Supply:
Power Consumption:
Internal Fuse:
Safety Inputs:
Maximum Voltage Between
Terminal Z1, Z2, Z3:
Detection Threshold:
Relay Outputs:
Auxiliary Outputs:
Max Switched AC:
Max Switched DC:
Min Switched Current/Voltage:
Impulse Withstand Voltage:
Max Drop-Out Time:
Max Output Fuse:
Reset Mode:
Mechanical
Mounting:
Case Material:
Max Wire Size:
Weight:
Color:
External Adjustment:
Indication:
Environmental
Enclosure Protection:
Operating Temperature:
Compliance
Standards:
All Models
±10%
SR125SMS4501
24 VDC
≤3.0 W
SR125SMS4502
110 VAC
≤5.2 VA
Electronic
Back EMF sensing between Z1 and Z2 and Z3
500 V (RMS)
Conforms to EN60947-1/5, EN61000-6,
EN62061, EN62061, EN ISO 12100-2,
EN ISO 13849-1/2
UL listed
CSA and TÜV Rheinland approved
0.01 V
1 N/O + 1 N/C switched at preset detection threshold
2 solid state for signaling
Inductive AC-15, 1800 VA inrush, 180 VA maintained
Inductive DC-13, 1.2-1.5 A/24 V
10 mA/17 V (provided that the contact has never been used with higher loads)
4000 V
n/a
4 A slow-acting or 6 A fast-acting
n/a
35 mm (1.38 in.) DIN rail
Polyamide PA6.6
2 x 2.5 mm (14 AWG) stranded
AC: 0.33 kg (11.6 oz.); DC: 0.23 kg (8.1 oz.)
Red with black body
Motor speed preset via potentiometer
Green = Power On, Green = Channel 1 activated,
Green = Channel 2 activated, Green = CH1 + CH2 activated
IP20 terminals, IP40 (NEMA 1) housing
-10 to 55°C (14 to 131°F)
EN60947-1/5, EN61000-6, EN62061, EN62061, EN ISO 12100-2,
EN ISO 13849-1/2
Approvals/Listings:
CE-marked for all applicable directives, UL and C-UL, CSA, TÜV
Specifications are subject to change without notice.
Note:
The safety contacts of the STI switches are described as normally closed (N/C)—i.e., with the guard closed,
actuator in place, and the machine able to be started.
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SR125SMS45
Safety Monitoring Relays
Application
24VDC, 110VAC
K1
START
L1 L2 L3
FUSE
(AUX)
K2
MOMENTARY
PUSH BUTTON
(AUX)
(AUX)
K1(a)
K1
(AUX)
K2(a)
K2
(AUX)
RESET
MOMENTARY
PUSH BUTTON
STOP
MOMENTARY
PUSH BUTTON
(AUX)
FUSE
LOCK RELEASE
A1
MOMENTARY
PUSH BUTTON
GUARD
CLOSED
3
2
9
S21
S14
S12
13
23
33
M
+
10 21
7
22
SR103AM
A1
K1
Z1
Z2
Z3
S10 S13
14
24
34
Logic
2
42
K1
K2
Operation
A1 N
P
SUPPLY BROWN BLACK
N A1
Y1 N
13 P
23 N
31 Y1 13 23 31
BLUESUPPLY BROWN BLACK
BLUE
MADE IN THE EC MADE IN THE EC
POWER
SMD03
POWER
SMD03
OUTPUT
OUTPUT
Stop Motion Detection
Stop Motion Detection
EN 60204
EN 60204
BS EN 292
BS EN 292
SUPPLY BROWN BLACK
A2 P
Stop signal
to motor
N
BLUESUPPLY BROWN BLACK
BLUE
P A2
Y2 P
14 N
24 P
32 Y2 14 24 32
Guard locking switch unlocks guard
allowing safe access to machine
SM125SMS45 detects back EMF of
motor and senses when hazardous
motion has ceased, then signals
guard locking switch to unlock
Terminal Connections
A1
Z1
13
21
Y33/43
POWER
BACK EMF
SENSING
SAFETY
OUTPUT 1
N/O
SAFETY
OUTPUT 2
N/C
AUXILIARY
SIGNALING
SOLID STATE
14
22
Z2
Z3
Y34
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Y33/43
22
Zero
Speed
Y34
Y44
SR125SMS45
FUSES
LATCHING
E-STOP
BUTTON
21
A1/A2
K2
14
A2
EB Series
13
K1
Logic
1
8
A2
2
+24V
K2
4
A2
CONTACT
PROTECTION
E.G.
THERMAL
CUT OUT
41
Relay control and
fault monitoring
+
Power supply
(S11 = 24 V)
TL8018-5
1
S11
Y44
to PLC
INDICATION BULB
Shows Stopped Motion
SR125SMS45
Safety Monitoring Relays
Block Diagram
A1
Z1
Z2
Z3
13
21
Y33/43
SR125SMS45
K1
LOGIC
1
A1/A2
LOGIC
2
Zero
Speed
K2
A2
14
22
Y34
Y44
Dimensions
(mm/in.)
99
3.89
35
1.38
45
1.77
114
4.48
Ordering
Model
Supply
Inputs
Outputs
Auxiliary
Part No.
SR125SMS4501
24 VDC
Back EMF Sensing
1 N/O + 1 N/C
2 Solid State
44510-1271
SR125SMS4502
110 VAC
Back EMF Sensing
1 N/O + 1 N/C
2 Solid State
44510-1272
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Note: Specifications are subject to change.
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