![background image](http://html.mh-extra.com/html/ifm/dd110s/dd110s_original-installation-instructions_620721023.webp)
23
UK
[%]
[ms]
[ms]
[°C]
[%]
[m]
[h]
[1/h]
[Years]
[kg]
[piece]
Output function
2 safety-related switching outputs (floating contacts)
1 fault output "Fault" (positive switching)
1 diagnostic output "Overspeed" (positive switching)
Output data
Fault output "Fault" Y7 and diagnostic output "Overspeed" Y8
≤ 20 mA, 24 V DC, voltage drop ≤ 2 V DC, short-circuit proof, non safe
Contact rating
6 A, 250 V AC / 24 V DC (≥ 6 mA); resistive load
Short-circuit protection
The contacts are to be protected by means of fuses with a nominal current of < 3.6 A.
Switching function
Switching outputs 13-14 and 23-24 open if input frequency/speed above switch point
Transistor output "Fault" Y7 open (LOW) in case of device fault or external fault
Transistor output "Overspeed" Y8 open (LOW) when the switching outputs 13-14 and 23
-24 are opened.
Accuracy / deviations
Hysteresis
5
Permitted frequency difference
between the inputs [%]
≤ 10 (f > 100 Hz) / ≤ 20 (f < 100 Hz)
Response times
Power-on delay time
≤ 3000
Risk time (response time for safety
-related faults)
5.5
Response time [ms]
[fsel ≥ 30 Hz]: t = 8.5 + 400 x (fsel ÷ fin)
[fsel < 30 Hz]: t = 8.5 + (4500 ÷ fin)
Environment
Ambient temperature
-40...55, observe the free space for convection (see operating instructions)
Storage temperature [°C]
-40...70
Max. relative air humidity
10...95
Height above sea level
≤ 2000
Protection
IP 20
Safety classification
Mission time TM
≤ 175200, (20 years)
Safety-related reliability PFHd
7.69E-09 (DC13 (2A), 24VDC) / 8.25E-09 (AC15 (1A), 220VAC) / 9.15E-09 (AC15 (3A),
220VAC)
Hardware Failure Tolerance HFT
1, type B
MTTFd
528.73 (DC13 (2A), 24VDC) / 496.36 (AC15 (1A), 220VAC) / 451.51 (AC15 (3A),
220VAC)
DC/CCF/Cat.
99.0 % / - / -
Mechanical data
Housing materials
PA (polyamide)
Installation
rail TH35 (to EN 60715)
Weight
0.309
Displays / operating elements
Display
Voltage
green
Release
yellow
Configuration
blue
Fault
Red
Switching status 2x green
Input pulses
2x yellow
Electrical connection
Connection
screw terminals; 0.5...2.5 mm² (AWG 30...12)
Remarks
Remarks
Safety classification considering 1000 relay operations/year
f sel = selected frequency (by potentiometer)
f in = input frequency (from sensors)
RoHS compliant
Pack quantity
1
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — GB — DD110S-00 — 14.01.2019
Outputs