Z203044-0V
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EP2 Series Installation Guide
Dimensions
1. Mount the transducer using the screws provided. Avoid damaging the electronic components.
2. Wire the transducer and configure the jumpers for desired operation as shown in the Wiring and Configuration section below.
3. Attach pressure tubing to the hose barbs. Observe MAIN and BRANCH port labels. Use flexible ¼” O.D. poly tubing for the main
and branch pneumatic connections. Main supply pressure must not exceed 45 psig.
Installation
Wiring & Configuration
1.9"
(48 mm)
3.3"
(84 mm)
3.5"
(89 mm)
Observe precautions for handling static sensitive
devices to avoid damage to the circuitry that
is not covered under the factory warranty.
Jumper Configuration
Input
Current (4 to 20 mA) or Voltage (0 to 5 V or 0 to 10 V)
Voltage
For voltage mode of operation, select 0 to 5 V or 0 to 10 V
Pressure Range
Select 0 to 20 psi or 3 to 15 psi scaling
Operation Mode
Select AUTO for normal operation or MANUAL to adjust pressure using the pushbuttons
Options
Alarm Mode Relay
The alarm contacts open if the EP2 cannot obtain 80% of commanded pressure within two (2) minutes
Manual Mode Alarm Contacts open when manual mode is selected (auto mode contacts are closed)
Vent On Power Fail
The EP2 vents the branch line pressure on power failure
Terminal Block Connections
GND/Common
Power supply ground and signal common.
Input Signal
4 to 20 mA, 0 to 10 Vdc, or 0 to 5 Vdc input from the control system.
Power
22 to 30 Vdc, 20 to 30 Vac. From the control system or external power supply or transformer.
Pressure Loss Alarm
(optional)
Normally closed, solid-state contacts open if the main supply pressure fails or if the transducer is otherwise unable to
produce the correct branch pressure. Connect to the digital input of the control system for alarm status indication. If
commanded pressure does not reach 80% within 2 minutes, the alarm contacts open.
• 0 to 20 psi alarm contact does not change state when the commanded pressure is 4 psi or less
• 3 to 15 psi alarm contact does not change state when the commanded pressure is 5.4 psi or less
NOTE: In 24 Vac transformer applications, one side of the transformer secondary is connected to the signal common. Some control systems may require a
dedicated power supply transformer or isolation transformer.
