Taco VR15

-18-
13 Controller Layout
VR 25H, VR 30M and VR30H controller
Terminal Designation Description
MODE
Mode selection rotary switch. Used to congure
mode of operation for the circuit. See section
14.3 “Module mode selection”
LED1 / LINK
Slowly blinking when module is powered.
Blinking fast when Modbus Error.
Permanently lid when Ethernet link established.
Ethernet 10BASE-T RJ-45 connector.
LED2 / ACT
Indicates Ethernet activity,
Modbus or BACnet activity.
B/D-
RS-485 negative data signal for
Modbus or BACnet.
A/D+
RS-485 positive data signal for
Modbus or BACnet
SET1 / RUN Control signal 1.
COM / 0V
RS-485 common and analog input
common (ground).
SET2 / MAX Control signal 2.
SET3 / FB Control signal 3.
NC
Normally closed relay contact.
Opens when relay is active.
C Relay common contact.
NO / NO
Normally open relay contact.
Closes when relay is active.
All models except VR25H, VR30M and VR30H
Analog Signals (SET1, SET2, SET3) • 12.5
Input Voltage Range -1 to 32 VDC When used as input.
Output Voltage Range 0 to 12 V When used as output. 5 mA max. Load allowed per output.
Input Resistance
~100 kW
0.5 mA load is added for most congurations.
--- --- Current sink to COM if congured as output.
Relay Specications • 12.6
Connection Type Screw-less terminals
Rating
- 250 VAC, 8A
Potential free changeover contact.
- 48VDC, Max Load up to 500VA
+24 V SET3 / FB SET2 / MAX COM / ØV SET1 / RUN
COM / ØV B/D - A/D +
NO C NC
GROUND
NEUTRAL
LINE
RS 485ANALOGRELAY
ETHERNET
LED1 LED2
L N