3 Specifications
Important: Interface the SSA-ISD Connect with Indication only to a SELV (Safety Extra-Low Voltage) for
circuits without earth ground or a PELV (Protected Extra-Low Voltage) for circuits with earth ground
power supply according to EN/IEC 60950.
Rated Supply Voltage (Ue)
24 V DC +15%, -20% (SELV/PELV power supply)
The external voltage supply must be capable of buffering brief mains
interruptions of 20 ms, as specified in IEC/EN 60204-1.
Rated Conditional Short-Circuit Current
100 A
Rated Isolation Voltage (Ui)
75 V DC
No-Load Current
60 mA typical at 24 V DC
75 mA maximum at 19.2 V DC
Rated Impulse Withstand Voltage (Uimp)
500 V
OSSD Outputs
Two, solid-state, current sourcing PNP outputs
Switching element function: PNP, NO
Voltage level: according to Type 3 EN 61131-2
Maximum operating current: 30 mA
Leakage current: ≤ 1 mA DC
On-state voltage: ≥ Ue – 3 V
Protection: Sustained short circuit and overload protection; thermal /
digital (clocking)
Test pulse duration: 70 us
Test pulse rate: 1 s
Input Device Requirements
Accepts two normally closed (NC) contacts
Simultaneity Requirement
Three seconds
Indication
Red (618 nm), Green (525 nm)
Housing/connectors
Housing: Polyvinyl Chloride (PVC), Black
Connector Nuts: Nickel plating on Cu/Zn allow
Power Up Delay
≤ 2 s
Response Time
40 ms m (7 ms × number of following ISD devices)
Maximum Cable Length Between ISD Devices
30 m
Vibration Resistance
Operating extremes: 10 Hz to 500 Hz, amplitude 0.35 mm, acceleration
50 m/s
2
Operating Conditions
–25 °C to +55 °C (–13 °F to +131 °F)
45% to 85% relative humidity (no condensation)
Environmental Ratings
For Indoor Use Only
IEC IP65, IEC IP67 (EN 60529)
EMC
According to EN 61326-1 and EN 61326-3-1
Safety Data
SIL 3 (IEC 61508)
SILCL 3 (EN 62061)
Category 4, PL e (EN ISO 13849-1)
PFHD: 6.56 × 10
-9
1/h according to EN 62061
Service Life: 20 years
SSA-ISD Connect with Indication
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