GIGA-TMS TR4020, User Manual

Page: 157 / 161

D.7. Bell and Lock control relays
The TR40xx features two
identical internal Relays with 2A
switching capability (average
current, peak current can be up
to 10A). Relay #1 is used to
control an external Bell (Ring),
relay #2 controls an Electric
Lock. Both normally-closed and
normally-opened contacts are
provided.
Relay #1 activates the bell at
pre-programmed daytimes, in
accordance with the
Bell Table .
The bell is activated for a period
of time specified by the
Bell
duration Setting. See Controlling
external Bell (Ring) for more
information.
Relay 2 activates the Lock
each time a valid User ID-card is read. The Lock is activated for a period of time specified by the Lock
activation duration Setting. See Using the TR40xx as an Access Control Terminal for more information.
Both external Bell and Lock are wired to the TR40xx’s terminal block connector located on the TR40xx’s
base cover. There are 3 contacts provided for each relay: common, normally-closed and normally-opened.
To plug a wire into the connector, push the orange lever down using a flat screwdriver (or some other handy
object), insert the wire and release the lever. There are several wire holders that you can use to arrange the
wires.
Push(using a
screwdriver)
Insert wire
NC=Normally Closed
CM= Common
Wire holder (x4)
NO= Normally Opened
N
C N
C C
M
C
M N
O N
O
Bell
Lock