Watlow PM LEGACY™ Limit Controller • 21 • Chapter 2 Install and Wire
Warning:
ç
Use National Electric (NEC)
or other country-specific
standard wiring and safety
practices when wiring and
connecting this controller to
a power source and to elec-
trical sensors or peripheral
devices. Failure to do so may
result in damage to equip-
ment and property, and/or
injury or loss of life.
Note:
Maximum wire size termina-
tion and torque rating:
• 0.0507 to 3.30 mm
2
(30 to
12 AWG) single-wire termi-
nation or two 1.31 mm
2
(16
AWG)
• 0.56 Nm (5.0 in-lb.) torque
Note:
Adjacent terminals may be
labeled differently, depending
on the model number
.
Note:
To prevent damage to the
controller, do not connect
wires to unused terminals.
Note:
Maintain electrical isolation
between analog input 1, dig-
ital input-outputs, switched
dc/open collector outputs
and process outputs to pre-
vent ground loops.
Quencharc Note:
Switching pilot duty inductive
loads (relay coils, solenoids,
etc.) with the mechanical
relay, solid state relay or
open collector output options
requires use of an R.C. sup-
pressor.
Input 1 Potentiometer PM6[L] _ _ J-_ _ _ _G_ __
L1
K1
J1
L2
K2
T1
S1
R1
Slot A
CW
• Use a 1kΩ potentiometer.
Input 1 Thermistor PM6[M] _ _ J-_ _ _ _G_ _
S_
R_
• >20MΩ input impedance
• 3µA open-sensor detection
Digital Output 5 - 6 PM6[L,M] [2,4] _ J-_ A_ _G_ __
common
switched dc
switched dc
98
99
CF
CD
CE
B5
D6
D5
Slot C
Digital Output
• SSR drive signal
• Update rate 10 Hz
• Maximum open circuit
voltage is 22 to
25V (dc)
• PNP transistor source
• Typical drive; 21mA @
4.5V (dc) for DO5,
and 11mA @ 4.5V for
DO6
• Current limit 24mA for
Output 5 and 12mA
Output 6
• Output 5 capable of
driving one 3-pole
DIN-A-MITE
• Output 6 capable of
driving one 1-pole
DIN-A-MITE
VDC
switched dc outputs
Internal Circuitry
D5
D6
B5
Note:
See output curves be-
low.
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