Veris Industries SDI SERIES Install - Manual (Page 12)

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Bi-Directional Analog Output - Option “5” in the ordering matrix
This option provides a programmable 4-20 mA signal proportional to flow rate and a contact closure to indicate the
direction of flow. All programming is accomplished as previously mentioned. The user can program the unit for pipe
size, flow scale and the direction of flow. This is a six-wire option.
Attach
SDI #1 (Shield) to Earth Ground or Power Supply Common. (This provides maximum power and signal EMI
protection).
Attach
SDI #2 (Power -) to the negative terminal of a nominal
12-24VAC/VDC Power Supply. (See data sheet for current draw and voltage
limits).
Attach
SDI#3 (Power +) to positive terminal of power supply.
Attach SDI #4 and SDI#5 (Direction +/-) to the device receiving the direc-
tional signal. (This connection is not polarity sensitive; and, when active,
provides a solid state switch closure for a maximum load of 100mA @30VAC
or +/-40VDC).
ANALOG OUTPUT – WIRED AS CURRENT SINKING
Attach SDI#6 (Loop -) to the Analog input terminal of device receiving this
4-20mA signal.
Attach SDI#7 (Loop +) to +24VDC terminal of device receiving the 4-20mA
Signal.
ANALOG OUTPUT – WIRED AS CURRENT SOURCING – SHARING SDI’s 24VDC POWER SUPPLY
Attach SDI#6 (Loop -) to Analog input terminal of device receiving this 4-20mA signal.
Attach SDI#7 (Loop +) to SDI#3. (Sharing terminal with +24VDC Supply).
Attach SDI#2 (Loop -) to Analog Input Common. (Sometimes labeled Loop -).
ANALOG OUTPUT – WIRED AS CURRENT SOURCING – (WITH SEPARATE 24VDC POWER SUPPLY)
Attach SDI#6 (Loop -) to Analog input terminal of device receiving this 4-20mA signal. (Sometimes labeled Loop +).
Attach SDI#7 (Loop +) to +24VDC Supply terminal.
Attach -24VDC Supply terminal to the Analog Input Common. (Sometimes labeled Loop -).
Bi-Directional Scaled Pulse Output - Option “6” in the ordering matrix
This option provides a programmable scaled pulse output signal proportional to flow rate and a contact closure to
indicate the direction of flow. All programming is accomplished as previously mentioned. The user can program
the unit for pipe size, flow scale and the direction of flow. This is a six-wire
option.
Attach
SDI #1 (Shield) to Earth Ground or Power Supply Common. (This
provides maximum power and signal EMI protection).
Attach
SDI #2 (Power -) to the negative terminal of a nominal
12-24VAC/VDC Power Supply. (See data sheet for current draw and voltage
limits).
Attach
SDI#3 (Power +) to positive terminal of power supply.
Attach SDI #4 (Pulse B -) to the Input pulse (-) of the receiving device.
Attach SDI #5 (Pulse B +) to the Input pulse (+) of the receiving device.
Attach SDI #6 (Pulse A -) to the Input pulse (-) of the receiving device.
Attach SDI #7 (Pulse A +) to the Input pulse (+) of the receiving device.
1. Shield
2. Power -
3. Power +
4. Direction
5. Direction
6. Loop -
7. Loop +
1 2 3 4 5 6 7
1. Shield
2. Power -
3. Power +
4. Pulse B -
5. Pulse B +
6. Pulse A -
7. Pulse A +
1 2 3 4 5 6 7