Watlow PM LEGACY
™
Limit Controller
•
16
•
Chapter 2 Install and Wire
Slot A
Slot B
Terminal Function
Configuration
Inputs
Universal, RTD and Thermistor Inputs
T1
S1
R1
S2 (RTD) or c
S3 (RTD), thermocouple -, current -, volts -
or potentiometer wiper, thermistor
S1 (RTD), thermo or volts +,
thermistor, potentiometer
Universal Sensor
Input 1: all configurations
Outputs
Switched dc/open collector
1
2
3
4
X1
W1
Y1
X3
W3
Y3
Common (Any switched dc output can use
this common.)
dc- (open collector)
dc+
Output 1: PM6[L,M] _[C] J-AA _ _G_ _
Output 3:
PM6[L,M] _ _J-AA[C] _ G_ _
Switched dc
W4
Y4
dc-
dc+
Output 4: PM6[L,M] _ _J-AA_ [C] G_ _
Universal Process
F3
G3
H3
voltage or current -
v
c
Output 3: PM6[L,M] _ _J-AA[F]_G_ _
Mechanical Relay 5 A, Form C
L1
K1
J1
L3
K3
J3
normally open
common
normally closed
Output 1: PM6[L,M] _ [E] J-AA_ _G_ _
Output 3: PM6[L,M] _ _J-AA[E] _G_ _
Mechanical Relay 5 A, Form A
L2
K2
L4
K4
normally open
common
Output 2: PM6[L,M] _ _[J] -AA_ _G_ _
Output 4: PM6[L,M] _ _J-AA_[J] G_ _
Solid-State Relay 0.5 A, Form A
L3
K3
L4
K4
normally open
common
Output 3: PM6[L,M] _ _J-AA[K] _G_ _
Output 4: PM6[L,M] _ _J-AA _ [K] G_ _
Communications
Modbus RTU 232/485 Communications
CB
CA
CC
CB
CA
C5
C3
C2
CB
CA
CC
CB
CA
C5
C3
C2
Modbus RTU EIA-485 T+/R+
Modbus RTU EIA-485 T-/R-
Modbus RTU EIA-485 common
Modbus RTU EIA-485 T+/R+
Modbus RTU EIA-485 T-/R-
Modbus RTU EIA-232 common
Modbus RTU EIA-232 to DB9 pin 2
Modbus RTU EIA-232 to DB9 pin 3
Slot B:
PM6[L,M] _ _ J-[F,2] AAAG_ _
DeviceNet™ Communications
Wiring
