Basler Electric DGC-2020HD - Manual (Page 335)

9469300990 Rev B 325
DGC-2020HD CEM-2020
CEM-2020
The Contact Expansion Module (CEM-2020) is an optional remote device that provides additional DGC-
2020HD contact inputs and outputs. Two types of modules are available. A low current module (CEM-
2020) provides 24 contact outputs and high current module (CEM-2020H) provides 18 contact outputs.
Up to four CEM-2020s may be used with one DGC-2020HD.
Features
CEM-2020s have the following features:

10 Contact Inputs

18 Contact Outputs (CEM-2020H) or 24 Contact Outputs (CEM-2020)

Functionality of Inputs and Outputs assigned by BESTlogic ™Plus Programmable Logic

Communications via CAN
Specifications
Operating Power
Nominal .................................................. 12 or 24 Vdc
Range ...................................................... 8 to 32 Vdc (Withstands cranking ride-through down to
6 Vdc for 500 ms)
Maximum Consumption
CEM-2020 ............................................... 14 W
CEM-2020H............................................. 8 W
Contact Inputs
The CEM-2020 contains 10 programmable inputs that accept dry contacts.
Time from a CEM-2020 input application to:

Shut down the generator via an alarm = 700 ms max

Close a relay on board the DGC-2020HD = 300 ms max

Close a relay on board the CEM-2020 = 550 ms max
Contact Outputs
Ratings
CEM-2020
Outputs 1 through 12 .............................. 1 Adc at 30 Vdc, Form C, gold contacts
Outputs 13 through 24 ............................ 4 Adc at 30 Vdc, Form C
CEM-2020H
Outputs 1 through 12 .............................. 2 Adc at 30 Vdc, Form C, gold contacts
Outputs 13 through 18 ............................ 10 Adc at 30 Vdc, Form C
CAN Interface
Differential Bus Voltage ........................... 1.5 to 3 Vdc
Maximum Voltage ...................................
–32 to +32 Vdc with respect to negative battery terminal
Communication Rate ............................... 250 kb/s