Publication PSS-SG001A-EN-P – June 2005
10 Isysnet
Valve Driver Module
PSSV32A
The PSSV32A valve driver module provides an interface
between the Isysnet serial bus system and the Isys valve
assembly. This module will always be the last module on the
Isysnet serial bus. It controls 32 digital outputs at 24VDC.
Depending on the valve selection, it can control up to 32
single solenoid valves or 16 double solenoid valves.
Valve Driver Module Specifications
PSSV32A
Outputs per Module 32, sourcing
Voltage Drop, On-State Output, Maximum 0.2VDC
Voltage, Off-State Output, Maximum 28.8VDC
Voltage, On-State Output,
Maximum 28.8VDC
Minimum 10VDC
Nominal 24VDC
Output Current Rating
200 mA per channel, not to exceed 6.0 A per module
Output Surge Current, Maximum
0.5 A for 10 ms, repeatable every 3 seconds
Current Leakage, Off-State Output, Maximum
0.1 mA
Current, On-State Output Minimum 200 mA per channel
Output Delay Time OFF to ON, Maximum
1
0.1 ms
Output Delay Time, ON to OFF, Maximum
1
0.1 ms
External DC Power Supply Voltage Range 10 to 28.8VDC
External DC Power Supply Voltage Nominal 24VDC
1. OFF to ON or ON to OFF delay is time from a valid output “on” or “off” signal to output energization or de-energization.
Step 3 - Select the Appropriate Power Unit
Selecting a Power Supply Unit
Isysnet adapters have built-in PointBus power supplies. All Isysnet modules are powered from the PointBus by either an adapter
or expansion power supply.
Power Specifications
Cat. No. Power Supply Operating Field Side Power Power Supply Input Power Supply
Input Voltage, Voltage Range Reuirements, Inrush Current, Overvoltage Interruption
Nom. Max. Max. Protection Protection
PSSCDM12A
Output voltage will
PSSCDM18PA
stay within
PSSCCNA
24VDC
specifications when
PSSCENA 24VDC 10...28.8VDC (+20% = 28.8VDC) 6 A for 10 ms Reverse polarity input drops out for
PSSCPBA
@ 400 mA protected max. load.
PSSSE24A
Power units are divided into two categories:
• Communication adapters with built-in power supply (dc-dc)
• Expansion power supply
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