20
TB1
D1
AC-IN 1
SIG
D2
ALRM
TB2
TP5
TP1
TP2
TP3
NC
SIG OUT
TP4
ALRM
PWR
GND
ALAR
M
NO
RE
LA
Y
V+
+5V
AC-IN 2
GND
ALARM ADJ.
RELAY, POWER BOARD
NOTE: THIS WIRING SCHEME IS THE
SAME WITH THE DISPLAY OPTION
THE AMC VersaTox HOUSING IS NOT SHOWN FOR CLARITY
WARNING
CABLE SHIELD MUST
NOT BE USED AS A
CONDUCTOR.
NOTE: PLUGGABLE CONNECTOR
+
-
{
BUILDING
4 - 20 mA
AUTOMATION
SYSTEM
FIGURE 4-13 Optional BAS interface
4.2.2 RELAY WIRING (OPTIONAL)
When the optional Relay, Power board is added to the AMC-VersaTox, an optional SPST relay
with a 2A @ 30VDC resistive contact rating is included on the board. The following figure shows
the general relay wiring scheme. The contacts may be configured as normally-open (NO) or
normally-closed (NC) using the alarm relay selector, see section 3 item 19. The alarm relay
selector is a pin header with a moveable strap for selecting the contact configuration. There are
two positions on the selector; move the strap to the center of the board for NO and to the edge
of the board for NC.
TB1
D1
AC-IN 1
SIG
D2
ALRM
TB2
TP5
TP1
TP2
TP3
NC
SIG OUT
TP4
ALRM
PWR
GND
AL
ARM
NO
REL
A
Y
V+
+5V
AC-IN 2
GND
ALARM ADJ.
RELAY, POWER BOARD
LOAD
SOURCE
+
-
NON-INDUCTIVE
LOAD CIRCUIT
FIGURE 4-14 Relay Wiring
Summary of Contents for VersaTox
Page 2: ......
