Watlow Series SD PID Profiling Controller - Manual (Page 4)

Wa t l o w S e r i e s S D • 2 • C h a p t e r 1 O v e r v i e w
The Watlow Series SD family of PID, microproces-
sor-based temperature controllers is available in 1/32,
1/16, 1/8 and 1/4 DIN panel mount sizes.* The product
family includes a static set point PID control version,
a PID profiling (ramp and soak) version and an FM
approved limit version. All models have a single, uni-
versal input that accepts various thermocouples, RTDs
(resistive temperature devices) or process inputs. (See
the Specifications in the Appendix for further details).
The Series SD PID controllers offer up to two out-
puts on the 1/32 DIN, and up to three outputs on all
others. Outputs can be configured as heat, cool, alarm
or off (deactivated). The control outputs can be inde-
pendently configured for PID or On-Off control. PID
settings include proportional band, reset (or integral)
and rate (or derivative).
The Series SD PID profiling (ramp and soak) con-
trollers are available as a factory order option for any
of the Series SD DIN sizes. The profiling feature allows
the user to program up to 4 profiles of 10 steps each.
The files can be linked to support a single file of up
to 34 unique steps. The Series SD profiling units can
also operate as a closed loop static set point controller
or manual mode (open loop, percent power) operation
capabilities. Outputs can be configured as heat, cool,
alarm, event or off (deactivated).
Standard Series SD features include an IP65/NE-
MA 4X front panel rating; CE compliance, UL, CUL,
CSA and NSF agency approvals; dual, four-digit dis-
plays in red or green
** ; autotuning for heat and cool
outputs; ramp to set point, to gradually warm up your
thermal system; and automatic/manual capability with
bumpless transfer. A low-voltage model is also avail-
able.
Advanced features include Modbus, EIA-485 serial
communications to interface with PC software ap-
plications; INFOSENSE™ technology that provides
low-cost, high-accuracy thermal sensing; and infrared
remote communication for easy-to-use controller setup
and monitoring.***
Other operator-friendly features include LED indi-
cators to aid in monitoring and setting up the control-
ler, as well as a calibration offset at the front panel.
The Watlow Series SD family automatically stores all
information in non-volatile memory and provides an
additional back-up for user-selected settings.
For more information on these and all other prod-
uct features, refer to the Features chapter and the Ap-
pendix.
* Also available in an FM-approved limit version.
** The 1/32 DIN controller comes only with a red
left and green right display.
*** Infrared option not available on 1/32 DIN.
Chapter 1: Overview
1
Control Input
Output 1
Control, Alarm, Retransmit or Event***
Output 2
Control, Alarm, Event***
Output 3*
Infrared
Configure**
Infrared
Monitor**
*1/32 DIN cannot have an Output 3.
**Infrared option is not available on 1/32 DIN.
***Event outputs available on profiling version only.
SD SD
2 3 1
SD SD
%
or Communications
Control, Alarm, Retransmit or Event***
Figure 2 — Series SD inputs and outputs.