The stepper-motor module X67SM4320 controls up to four stepper motors with a rated voltage of 18 to 30 Vdc at a motor current up to 1 A (1.5 A peak).
Module X67SM2436, on the other hand, controls up to two stepper motors with a rated voltage of 18 to 48 Vdc at a motor current up to 3 A (5 A peak). The unit sports six digital inputs that can be used as limit switches or encoder inputs. Each model has a maximum step frequency of 20 kHz.
B&R Industrial Automation Corp., 1325 Northmeadow Pkwy., S-130, Roswell, GA 30076,
(770) 772-0400, brautomation.com