Total Number of Monitored Inputs: 15
(12 - contact inputs, ground referenced, numbered C1-C12)
(3 - opto-isolated voltage inputs, not ground referenced, numbered V1-V3)
Total Number of Controlled Outputs: 2
(2 - SPDT electromagnetic relay contacts (NO, NC, COM), numbered RL1 and RL2)
Screw Terminal Connectors: 8 connectors x 6 polls/connector (48 poles total), 3.50 mm pluggable screw-down connector, AWG 16-24, Molex P/N 39351-0006.
Relay contact load rating (RL1 or RL2): 1.5 Amp at 30 VDC
Maximum relay contact operating voltage (RL1-RL2): 30 VDC
Maximum relay contact operating current (RL1-RL2): 1.5 Amp
Maximum relay contact switching capacity (RL1-RL2): 62.5 VA, 33 W
Detection Method - Contact Inputs (C1-C12): Input transistor circuit detects external resistance between input and ground terminals. External resistances below 15K ohm produce a CLOSED condition/state. External resistances above 600K ohm produce an OPEN condition/state.
Input Resistance of Opto-isolated Voltage Inputs (V1-V3): 16K Ohm
Detection Method - Opto-isolated Voltage Inputs (V1-V3): Optical coupler detects voltage difference between V+ and V-. A voltage difference, on these terminals, below approximately 3 volts produces an OFF condition/state. A voltage difference, on these terminals, equal to or greater than approximately 3 volts produces an ON condition/state. The minimum recommended voltage input for an ON condition/state is dependent upon resistance of the voltage source.
Minimum Detectable Input Duration: 60 mS. This specification is not valid during a write to any variable in the SS6420’s non-volatile memory.
Maximum Time from State Change to Issue of Interrupt Packet: 300 mS. This specification is not valid during a write to any variable in the SS6420’s non-volatile memory.
Maximum Applied Voltage on Opto-isolated Voltage Inputs (V1-V3): 30 V
Power source: External power adapter
Power supply current drain: < 300 mA
External Power Source Connector: 2.1 mm jack
External Power Source Requirements: 6 VDC, 300 mA capability (input circuit is polarity protected). Recommended power adapter is P/N PA6106, PA6206-XX or SS1017.
Peripheral DC Power Source: for external peripheral devices
Peripheral Power Source Connector: 2.5 mm jack
Peripheral Power Source Requirements: Center negative (input circuit is polarity protected). The input DC voltage will depend on the requirements of peripheral devices that the customer is powering. The maximum input voltage allowed is 30 VDC. The maximum current that can be conducted is 0.75 Amp after which the internal overload protection will trigger. The overload protection is provided by a self-healing poly-fuse. This power source is made available through 12 polls of the screw terminal connectors. The recommended power adapter for powering security detectors is P/N PA6212-XX (12 VDC, 1.2 A).
Communications Interface: 10/100 Base-T Ethernet
Communications Connector: 8 position modular jack, (accepts 8 position plug, RJ45)
Maximum communications cable length: 100 m (328 ft.) using appropriate UTP cable.
Transport Layer Communications Protocol: TCP
IP Address: defined by customer (can be dynamic via DHCP or static, default is DHCP)
TCP Port Number: defined by customer (default is 3001). SS6420E-SSH model default is 30001.
Firmware Version: 6.24
Communications Protocols: Sensorsoft Device Protocol (SSDP) Version 3.0 or Simple Text Command Interface (see User Manual for commands). Support for SSH provided by SS6420E-SSH model
Communications Error Control: (SSDP only) 16 bit CRC (cyclic redundancy checking) for detection of communication errors between the device and host.
Number of Variables: 87
EEPROM: 2 Kbytes. Stores user defined input description and Boolean state strings
Maximum Length of Input Description String: 32 characters
Maximum Length of Boolean State String: 8 characters
Housing Dimensions: 7.5” (190.5 mm) x 2.8” (71.12 mm) x 1.3" (33.02 mm) (without terminal block plugs) (as of May 17, 2022)
Housing Material: sheet steel (as of May 17, 2022)
Housing Weight: 1.4 lbs (0.64 kg) (without terminal block plugs) (as of May 17, 2022)
Housing Color: Light Grey (RAL7035) (as of May 17, 2022)
Operating Temperature Range: 0 º C to +80 º C (32 º F to +176 º F) - available for -40 º C to +80 º C range on special order
Operating Humidity Range: 90% or less, non-condensing