Basler Electric DGC-2020ES - Manual (Page 193)

9469200990 Rev C 185
CEM-2020
General Information
The optional CEM-2020 is a remote auxiliary device that provides additional DGC-2020ES 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.
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 Power Dissipation
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-2020ES = 300 ms max
•
Close a relay on board the CEM-2020 = 550 ms max
Notes
A CEM-2020 contact input is true (on) if the input is connected to
battery ground with a resistance of less than 200 ohms.
The maximum length of wire that can be accommodated depends on
the resistance of the wire, and the resistance of the contacts of the
device driving the input at the far end of the wire.
The maximum wire length can be calculated as follows:
L
max
= (200
– R
device
)/(Resistance per Foot of Desired Wire)
Contact Outputs
Ratings
CEM-2020
Outputs 5 through 16 .............................. 1 Adc at 30 Vdc, Form C, gold contacts
Outputs 17 through 28 ............................ 4 Adc at 30 Vdc, Form C
DGC-2020ES CEM-2020