valent VPRE Series - Input;Output Points Reference

Valent Controls IOM 28 IOM-C1-0616
Part Number 474626
Analog Output
Terminals
Type
Notes
1
Exhaust Fan Speed Output (VFD)
AO1
0V
0-10 VDC (0-100%)
2
Heat Wheel Speed Control (VFD)/
Flat Plate Face and Bypass Damper
Output
0V
AO2
0-10 VDC (0-100%, Direct Acting;
100% = Full Recovery)
3
Water Valve Circuit A / Head Pressure AO
(A if AHPC 2.0) ActualCondenser Fan
VFD/Valve A
AO3
0V
0-10 VDC (0-100%)
4
Water Valve Circuit B/ Head Pressure AO
(B if AHPC 2.0) ActualCondenser Fan
VFD/Valve B
0V
AO4
0-10 VDC (0-100%)
16-Point Module 2 (Optional)
Universal Input
Terminals
Type
Notes
1
Exhaust Fan Control (Hardwired)
U1
0V
0-10 VDC (0-100%)
2
Supply Air Flow Measuring Station (if
equipped with both supply and AMD)
0V
U2
0-10 VDC (display range varies)
3
Damper Control (Hardwired)
U3
0V
0-10 VDC (0-100%)
4
Exhaust Air Flow Measuring Station
0V
U4
0-10 VDC (display range varies)
5
Supply Fan Control (Hardwired)
U5
0V
0-10 VDC (0-100%)
6
0V
U6
7
Freezestat Input
U7
0V
Contact Closed = Normal (Hot Water
and Chilled Water freezestats wired in
series if both coils exist)
8
0V
U8
Digital Output
Terminals
Type
Notes
1
D1
1C2
2-position relay
2
1C2
D2
2-position relay
3
D3
3C4
2-position relay
4
3C4
D4
2-position relay
Analog Output
Terminals
Type
Notes
1
AO1
0V
0-10 VDC (0-100%)
2
0V
AO2
0-10 VDC (0-100%)
3
AO3
0V
0-10 VDC (0-100%)
4
0V
AO4
0-10 VDC (0-100%)