Watlow PC1X-N20, User Manual

Page: 14 / 73

3 . 2
■
Wa t l o w P o w e r S e r i e s W i r i n g , C h a p t e r 3
ç∫
WARNING:
To avoid damage to
property and equipment,
and/or injury or loss of
life, use National Electric
Code (NEC) standard
wiring practices to install
and operate the Power
Series. Failure to do so
could result in damage,
and/or injury or death.
NOTE:
Input, retransmit and
communications external
terminals have been
designed for protection in
case of direct contact in
accordance with Europ-
pean Standard EN50178.
NOTE:
Insure ground is wired
with the same size wire
as line and load
connections to a ground
of sufficient current
carrying capacity. (Refer
to Chapter 2, p. 2.1,
Power Series Wire
Bending Radius at Base
Current and Ambient
Temperature Rating.)
NOTE:
Torque and wire strip
guidelines:
• Control wiring 1 thru
23.
• Strip wire to 0.24 inch
(6mm). Torque to 8 in.-
lbs. ( 0.9 Nm).
• Hold torque for 30
seconds to allow for
wiring settling and cold
flow. Re-torque after
48 hours.
• All line connections
should be re-torqued
every 3-6 months.
Input Wiring
Figure 3.2a –
Control Power and Alarm Wiring
Figure 3.2b –
Retransmit Wiring
Figure 3.2c –
Communications Wiring
Power Series
6
5
4
3
2
1
11
10
9
8
7
14
13
12
17
16
15
20
19
18
23
22
21
External Connector
COMMS
7 8
485 T/R +
(Common)
9 10 11
232 TRAN (EIA/TIA-232 Transmit Out)
232 REC (EIA/TIA-232 Receive In)
485 T/R -
RETRANSMIT
DC 10V/20mA
Power Series
6
5
4
3
2
1
11
10
9
8
7
14
13
12
17
16
15
20
19
18
23
22
21
External Connector
12 13 14
I
V
+
+
(Current Out, 4 to 20mA)
(Common)
(Voltage Out, 0 to 10V)
Power Series
External Connector
Relay Internal to Power Series
NC
C
NO
L1
L2
L1
L2
208 or 240V~
(Alarm Common)
(Alarm
Normally Open)
(Alarm
Normally Closed)
Unused
120V~
6
5
4
3
2
1
11
10
9
8
7
14
13
12
17
16
15
20
19
18
23
22
21
CONTROLLER
POWER SUPPLY
85 to 265V~ 55VA
L1
Neutral
ALARM
250V~ 3A
1 2 3
4 5 6