The 1756-PSCA2 module acts as the central hub for distributing power within a ControlLogix redundant power supply architecture. Instead of connecting power supplies directly to the chassis, this adapter consolidates their output into one seamless feed for the backplane. Consequently, it ensures continuous operation even if one power unit fails. This device is an open-type, passive component and requires no external configuration. Engineers specifically designed it for standard Series B chassis. Moreover, it supports both 1756-PA75R AC and 1756-PB75R DC power supplies. With its hazardous location certification and wide temperature tolerance, the 1756-PSCA2 adapts easily to demanding industrial environments.
This section details the electrical capabilities of the 1756-PSCA2 adapter. It delivers precise current levels to support various backplane components. Specifically, its output capacity reaches 1.5 A at 1.2V DC, 4 A at 3.3V DC, 15 A at 5.1V DC, and 2.8 A at 24V DC. Regarding backplane draw, the unit consumes only 125 milliamps at 24 Volts. Meanwhile, its maximum power dissipation measures 25.7 Watts at 30 °C, dropping to 21.3 Watts at 60 °C. For field wiring, it utilizes three removable terminal blocks, specifically the 1756-TBSH or 1756-TBNH models. Additionally, the device complies with hazardous location standards, holding an Ex nA IIC T4 Gc protection type per EN 60079-15 and an IECEx UL 14.0008X certificate.
Engineers will appreciate the robust physical design of the 1756-PSCA2. This module weighs just 0.228 kilograms (8.1 ounces) and measures 5.51 x 4.41 x 5.71 inches. Its operating temperature range extends from 0 to 60 °C (32 to 140 °F). The adapter requires horizontal mounting and must sit to the left of the chassis. Moreover, it needs a connection cable, the 1756-CPR2, which features a minimum bend radius of 5 inches (12.7 cm). This clearance is crucial for proper routing and to avoid stress on the connections. Remember to follow local grounding requirements, as some installations might need an additional protective earth-ground terminal stud to minimize resistance effectively.
Proper installation ensures the longevity and performance of your 1756-PSCA2 module. First, verify that your chassis is a standard Series B type, as this adapter will not work with other versions. Next, mount the adapter horizontally on the left side of the chassis. Then, use the 1756-CPR2 cable to link the adapter to your chosen power supply, whether it is a 1756-PA75R or 1756-PB75R. When routing the cable, maintain a clearance of at least 5 inches to accommodate its bend radius. Furthermore, ensure the device connects to a proper ground according to your facility's safety protocols. In some cases, connecting a protective earth stud to the ground bus is necessary. Keep all wiring lengths as short as possible to reduce resistance and maintain power integrity.
When you order the 1756-PSCA2, you will receive the chassis adapter module as the primary component. The package includes the necessary hardware for standard mounting. However, please note that the removable terminal blocks (1756-TBSH or 1756-TBNH) and the 1756-CPR2 connecting cable are available separately. All shipments move through premium carriers to ensure safe and timely delivery. We exclusively use FedEx, UPS, and DHL for all orders. Your purchase will arrive carefully packed to prevent damage during transit.
1. Is the 1756-PSCA2 compatible with standard ControlLogix chassis?
Yes, this adapter works with standard Series B ControlLogix chassis. It will not function with older Series A models.
2. Can I use a single power supply with the 1756-PSCA2?
Absolutely. The 1756-PSCA2 can operate with just one power supply, but its primary advantage lies in supporting two redundant units for enhanced system reliability.
3. What cables do I need to connect the 1756-PSCA2?
You will need the 1756-CPR2 cable to connect the adapter to your power supply. This cable does not come with the adapter and requires a separate order.
4. Does the 1756-PSCA2 require any software configuration?
No, this is a passive hardware device. The 1756-PSCA2 needs no firmware or software setup. Simply install it and connect the cables.
5. What is the maximum current output for the 5.1V DC rail?
The 1756-PSCA2 provides up to 15 A on the 5.1V DC rail, which suffices to power multiple modules in your ControlLogix system.
| Brand Name | |
| Model No. | 1756-PSCA2 |
| Product Type | Adapter Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
