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Sensaphone
®
ISACC Instruction Manual
II. I/O Channel Attributes and Features
A. Inputs
The system shall come standard with 16 universal input channels. All input chan-
nels shall be user-configurable as:
1. NO or NC digital dry contact, using 1mA loop current
2. 4-20mA analog, using custom look up table
3. 0-5V analog, using custom look up table
4. Pulse count
5. Thermistor
The system shall also allow monitoring of AC power failure through an input
channel using built-in circuitry and controlled by C program.
All monitored channels, including built-in monitoring features, shall allow local
and remote data programming of pertinent operational data including, but not
limited to:
1. Input type (NO/NC dry contact, 4-20mA and 0-5V analog, pulse count,
thermistor)
2. High and Low limits (-9999 to +9999)
3. Input recognition time (0 seconds to 270 minutes)
5. Dialout Alarm Selection for each channel
6. Enable/disable for each channel to dialout for alarm
B. Outputs
The system shall have 8 digital 5 Volt TTL logic level outputs capable of sinking or
sourcing 20 mA. The system shall also have one built-in SPDT form C 5A
250VAC mechanical relay output that may be programmed to switch automatically
or manually. In addition, four 0 - 10VDC analog outputs are also included. The
analog outputs shall be 0 to 10 Volts, 8 bit data from 0 to 255.
III. Communications Features
A. Telephone Specifications
The system shall connect to a standard 2-wire telephone line using pulse or tone,
with loop start only. The system shall recognize ringer frequencies from 16 to 60
Hz. Call progress detection shall ensure that the alarm dialout is not hindered by
no answers or busy signals.
B. Communication Interface
The system shall have a built-in 1200 bps modem to allow remote data communi-
cation and programming via PC or terminal. The system shall have a built-in
RS232 serial port for the purpose of local communication and programming via
PC or terminal. The system shall also have a built-in RS485 port for networking
up to 16 ISACC systems.
C. Telephone Numbers