Watlow CPC400 - Manual (Page 188)

Chapter 7: Specifications CPC400 Series User’s Guide
174 Watlow Anafaze Doc. 0600-2900-2000
Table 7.16 Input Resistance for Voltage Inputs
Table 7.17 Digital Inputs
Outputs
The controller directly accommodates switched dc and
open-collector outputs only. These outputs can be used to
control a wide variety of loads. They are typically used to
control solid-state relays or other power switching devices
which, in turn, devices such as heaters. They may also be
used to signal another device of an alarm condition in the
controller.
Analog outputs may be accomplished by using Dual DAC or
Serial DAC modules in conjunction with one of the control
outputs.
An open-collector CPU watchdog output is also provided so
that an external device can monitor the CPU state.
Analog Outputs
No direct analog outputs are provided.
Range Input Resistance
0 to 12V 85 k
Ω
0 to 10V 50 k
Ω
0 to 5V 40 k
Ω
0 to 1V 7.4 k
Ω
0 to 500 mV 6.2 k
Ω
0 to 100 mV 1.2 k
Ω
Number 8
Configuration
8 selectable for output override, remote job
selection or programmable logic
Input Voltage Protection
Diodes to supply and common. Source must
limit current to 10 mA for overvoltage conditions
Voltage Levels
<1.3V = Low
>3.7V = High (TTL)
5V maximum, 0 V minimum
Maximum Switch Resistance to Pull Input Low 1 k Ω
Minimum Switch Off Resistance 11 k Ω
Response Time
50 ms (AC line frequency set to 60 Hz)
60 ms (AC line frequency set to 50 Hz)