Safe Speed Monitoring Modules


Module connects to two sensors with PNP outputs, monitoring rotation (rpm) or linear movement. Provides over-speed, under-speed and zero-speed detection.

  • Feedback input monitors external machine control elements
  • 24V ac/dc operation
  • Two redundant, forced guided output contacts rated at 4A, plus one auxiliary N.C. output contact
  • Stop Category 0, per ISO 13850 (EN 418), IEC 60204-1, and ANSI NFPA 79; Category 3, SIL Claimed Level (SIL CL) 3 to EN 62061, Category 3 / Performance Level (PL) e to DIN EN ISO 13849-1
  • DIN-rail mountable 45 mm wide housing with removable terminal blocks
  • Energizes output relays (closes N.O. contacts), when speed drops below set value, for "standstill" (under-speed) monitoring
  • De-energizes output relays (opens N.O. contacts), when speed rises above set value, for over-speed monitoring

Product Specifications

Start-up reset time1.5 second
Nominal voltage24V ac/dc, 50-60 Hz, no polarity AC:UN +10 / -15%
DC:UN +/- 10%
Power consumption:approximately 4VA, 2.5 W
Hysteresis6% typical
PNP-Input Sensor24V dc (terminals S1s and S2s) Input current max.:25 mA
Input current min.:3 mA
Min. pulse time:1 ms ON, 1 ms OFF
Max. IPM at inputs S1s + S2s30,000
Adjustable Setting Ranges (Impulses per Minute)Model SSM-FM-11A10:5…40 ipm, 35…340 ipm, 300…2,700 ipm, or 1,200…10,500 ipm
Model SSM-FM-11A20:10…80 ipm, 80…650 ipm, 600…5,300 ipm, 2,400…20,000 ipm
Output Response TimeOver-speed detection Model SSM-FM-11A10:Range 5…10,500: tR = 700 ms typ.
Model SSM-FM-11A20:Range 10…20,000: tR = 350 ms typ.
Output ConfigurationOutputs K1 & K2:two redundant (total of four) safety relay N.O. (forced-guided) contacts—AgNi, gold flashed; one auxiliary N.C. contact—AgNi, gold flashed
Contact ratings (all N.O. and N.C. output contacts):2 normally open (N.O.) output channels and 1 normally closed (N.C.) aux. output
Current Rating:
Thermal Current Ith:4A
Switching Capacity to AC 15:3A / 230V ac for N.O. contacts (per IEC/EN 60 947-5-1); 2A / 230V ac for N.C. contact (per IEC/EN 60 947-5-1)
Min. voltage:15V ac/dc
Max. voltage:230V ac/dc
Min. current:30 mA ac/dc
Max. current:4 A
Min. power:0.45 W (0.45 VA)
Max. power:100 W (920 VA)
Electrical life to AC15 at 2A, 230V ac3 x 100 000 operations min. (per IEC/EN 60 947-5-1)
Mechanical life50 x 1,000,000 operations min.
Indicators3 green LED indicators:Power On, Channel 1 active, and Channel 2 active
ConstructionThermoplastic with VO behavior according to UL subject 94
Environmental RatingHousing IP40, Terminals IP20 (IEC/EN 60 529)
MountingMounts to standard 35 mm DIN rail track. Safety Module must be installed inside an enclosure rated NEMA 3 (IEC IP54) or better.
Vibration Resistance10 to 55 Hz @ 0.35mm displacement per IEC 68-2-6
Operating ConditionsTemperature:0 - 50 C (+32 to 122 F)
Max. Rel. Humidity:90% @ +50 C (non condensing)
CertificationsApprovals are pending.


Data Sheets

Document Name Part Number File Size Download
1. SSM-FM-11A Safe Speed Monitoring Modules -- Datasheet 140782 Download

Banner Insider eNewsletter

Helpful application information, new product updates, answers to frequently asked questions, and more.

Subscribe Now »

Banner Enhances Mobile Site »
  • Search by part/model number
  • Easily locate distributors in your area
  • Share data from your phone or tablet

Worldwide Distributors

Banner has more than 3,000 distributors—ready to help you. Enter your U.S. city or zip.

06828 [change]

Find international distributors