Overview Of Iec Pelv/Nec Class 2 Wiring - Lutron Electronics QS Timeclock Quick Installation And Operation Manual

Overview of IEC PELV/NEC
Contact Closure Input Wiring
24 V- 50 mA
For settings, see CCI Setup.
18 AWG (1.0 mm
each terminal
Example:
Third-party contact
closure to enable /
disable timeclock
Wiring Detail
For links 500–2000 ft (153–610 m)
Data link: (1) twisted, shielded pair
22 AWG (0.5 mm
3: MUX
4: MUX
(2) 12 AWG
(4.0 mm )
2
(2) 12 AWG
(4.0 mm )
2
IEC PELV/NEC Class 2 control wiring
®
(2) 18 AWG (1.0 mm )
2
1: Common
2: 24 V-
®
Class 2 Wiring
®
A: CCI SIG
-
B: 24 V
C: CCI COM
)
2
Control Wiring
24 V- 100 mA
Common and power (terminals 1 and 2):
Two 18 AWG (1.0 mm
Two 12 AWG (4.0 mm
)
2
Data (terminals 3 and 4):
4
3
Twisted, shielded pair 22 AWG (0.5 mm
2
1
NOT
USED
) each terminal (for link <500 ft/153 m)
2
) each terminal (for link 500–2000 ft/153–610 m)
2
To other
QS devices
QS Timeclock Quick Installation and Operation Guide 5
1: COM
2: 24 V - *
* Do not connect terminal 2
3: MUX between a QS Timeclock
4: MUX
and any other power supply.
) each terminal
2
Note: Use appropriate wire
connecting devices as
specified by local codes.
N H 1 2 3